Policy CSP - Defender

AllowArchiveScanning

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowArchiveScanning

This policy setting allows you to configure scans for malicious software and unwanted software in archive files such as .ZIP or .CAB files.

If you enable or do not configure this setting, archive files will be scanned.

If you disable this setting, archive files will not be scanned. However, archives are always scanned during directed scans.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Not allowed. Turns off scanning on archived files.
1 (Default) Allowed. Scans the archive files.

Group policy mapping:

Name Value
Name Scan_DisableArchiveScanning
Friendly Name Scan archive files
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name DisableArchiveScanning
ADMX File Name WindowsDefender.admx

AllowBehaviorMonitoring

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowBehaviorMonitoring

This policy setting allows you to configure behavior monitoring.

If you enable or do not configure this setting, behavior monitoring will be enabled.

If you disable this setting, behavior monitoring will be disabled.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Not allowed. Turns off behavior monitoring.
1 (Default) Allowed. Turns on real-time behavior monitoring.

Group policy mapping:

Name Value
Name RealtimeProtection_DisableBehaviorMonitoring
Friendly Name Turn on behavior monitoring
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Real-time Protection
Registry Key Name Software\Policies\Microsoft\Windows Defender\Real-Time Protection
Registry Value Name DisableBehaviorMonitoring
ADMX File Name WindowsDefender.admx

AllowCloudProtection

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1507 [10.0.10240] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowCloudProtection

This policy setting allows you to join Microsoft MAPS. Microsoft MAPS is the online community that helps you choose how to respond to potential threats. The community also helps stop the spread of new malicious software infections.

You can choose to send basic or additional information about detected software. Additional information helps Microsoft create new security intelligence and help it to protect your computer. This information can include things like location of detected items on your computer if harmful software was removed. The information will be automatically collected and sent. In some instances, personal information might unintentionally be sent to Microsoft. However, Microsoft will not use this information to identify you or contact you.

Possible options are: (0x0) Disabled (default) (0x1) Basic membership (0x2) Advanced membership

Basic membership will send basic information to Microsoft about software that has been detected, including where the software came from, the actions that you apply or that are applied automatically, and whether the actions were successful.

Advanced membership, in addition to basic information, will send more information to Microsoft about malicious software, spyware, and potentially unwanted software, including the location of the software, file names, how the software operates, and how it has impacted your computer.

If you enable this setting, you will join Microsoft MAPS with the membership specified.

If you disable or do not configure this setting, you will not join Microsoft MAPS.

In Windows 10, Basic membership is no longer available, so setting the value to 1 or 2 enrolls the device into Advanced membership.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Not allowed. Turns off the Microsoft Active Protection Service.
1 (Default) Allowed. Turns on the Microsoft Active Protection Service.

Group policy mapping:

Name Value
Name SpynetReporting
Friendly Name Join Microsoft MAPS
Element Name Join Microsoft MAPS
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > MAPS
Registry Key Name Software\Policies\Microsoft\Windows Defender\Spynet
Registry Value Name SpynetReporting
ADMX File Name WindowsDefender.admx

AllowEmailScanning

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowEmailScanning

This policy setting allows you to configure e-mail scanning. When e-mail scanning is enabled, the engine will parse the mailbox and mail files, according to their specific format, in order to analyze the mail bodies and attachments. Several e-mail formats are currently supported, for example: pst (Outlook), dbx, mbx, mime (Outlook Express), binhex (Mac). Email scanning is not supported on modern email clients.

If you enable this setting, e-mail scanning will be enabled.

If you disable or do not configure this setting, e-mail scanning will be disabled.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 0

Allowed values:

Value Description
0 (Default) Not allowed. Turns off email scanning.
1 Allowed. Turns on email scanning.

Group policy mapping:

Name Value
Name Scan_DisableEmailScanning
Friendly Name Turn on e-mail scanning
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name DisableEmailScanning
ADMX File Name WindowsDefender.admx

AllowFullScanOnMappedNetworkDrives

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowFullScanOnMappedNetworkDrives

This policy setting allows you to configure scanning mapped network drives.

If you enable this setting, mapped network drives will be scanned.

If you disable or do not configure this setting, mapped network drives will not be scanned.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 0

Allowed values:

Value Description
0 (Default) Not allowed. Disables scanning on mapped network drives.
1 Allowed. Scans mapped network drives.

Group policy mapping:

Name Value
Name Scan_DisableScanningMappedNetworkDrivesForFullScan
Friendly Name Run full scan on mapped network drives
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name DisableScanningMappedNetworkDrivesForFullScan
ADMX File Name WindowsDefender.admx

AllowFullScanRemovableDriveScanning

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowFullScanRemovableDriveScanning

This policy setting allows you to manage whether or not to scan for malicious software and unwanted software in the contents of removable drives, such as USB flash drives, when running a full scan.

If you enable this setting, removable drives will be scanned during any type of scan.

If you disable or do not configure this setting, removable drives will not be scanned during a full scan. Removable drives may still be scanned during quick scan and custom scan.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Not allowed. Turns off scanning on removable drives.
1 (Default) Allowed. Scans removable drives.

Group policy mapping:

Name Value
Name Scan_DisableRemovableDriveScanning
Friendly Name Scan removable drives
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name DisableRemovableDriveScanning
ADMX File Name WindowsDefender.admx

AllowIntrusionPreventionSystem

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowIntrusionPreventionSystem

Allows or disallows Windows Defender Intrusion Prevention functionality.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Not allowed.
1 (Default) Allowed.

AllowIOAVProtection

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowIOAVProtection

This policy setting allows you to configure scanning for all downloaded files and attachments.

If you enable or do not configure this setting, scanning for all downloaded files and attachments will be enabled.

If you disable this setting, scanning for all downloaded files and attachments will be disabled.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Not allowed.
1 (Default) Allowed.

Group policy mapping:

Name Value
Name RealtimeProtection_DisableIOAVProtection
Friendly Name Scan all downloaded files and attachments
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Real-time Protection
Registry Key Name Software\Policies\Microsoft\Windows Defender\Real-Time Protection
Registry Value Name DisableIOAVProtection
ADMX File Name WindowsDefender.admx

AllowOnAccessProtection

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowOnAccessProtection

This policy setting allows you to configure monitoring for file and program activity.

If you enable or do not configure this setting, monitoring for file and program activity will be enabled.

If you disable this setting, monitoring for file and program activity will be disabled.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Not allowed.
1 (Default) Allowed.

Group policy mapping:

Name Value
Name RealtimeProtection_DisableOnAccessProtection
Friendly Name Monitor file and program activity on your computer
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Real-time Protection
Registry Key Name Software\Policies\Microsoft\Windows Defender\Real-Time Protection
Registry Value Name DisableOnAccessProtection
ADMX File Name WindowsDefender.admx

AllowRealtimeMonitoring

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowRealtimeMonitoring

This policy turns off real-time protection in Microsoft Defender Antivirus.

Real-time protection consists of always-on scanning with file and process behavior monitoring and heuristics. When real-time protection is on, Microsoft Defender Antivirus detects malware and potentially unwanted software that attempts to install itself or run on your device, and prompts you to take action on malware detections.

If you enable this policy setting, real-time protection is turned off.

If you either disable or do not configure this policy setting, real-time protection is turned on.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Not allowed. Turns off the real-time monitoring service.
1 (Default) Allowed. Turns on and runs the real-time monitoring service.

Group policy mapping:

Name Value
Name DisableRealtimeMonitoring
Friendly Name Turn off real-time protection
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Real-time Protection
Registry Key Name Software\Policies\Microsoft\Windows Defender\Real-Time Protection
Registry Value Name DisableRealtimeMonitoring
ADMX File Name WindowsDefender.admx

AllowScanningNetworkFiles

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowScanningNetworkFiles

This policy setting allows you to configure scanning for network files. It is recommended that you do not enable this setting.

If you enable this setting, network files will be scanned.

If you disable or do not configure this setting, network files will not be scanned.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 0

Allowed values:

Value Description
0 (Default) Not allowed. Turns off scanning of network files.
1 Allowed. Scans network files.

Group policy mapping:

Name Value
Name Scan_DisableScanningNetworkFiles
Friendly Name Scan network files
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name DisableScanningNetworkFiles
ADMX File Name WindowsDefender.admx

AllowScriptScanning

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowScriptScanning

Allows or disallows Windows Defender Script Scanning functionality.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Not allowed.
1 (Default) Allowed.

AllowUserUIAccess

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1507 [10.0.10240] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AllowUserUIAccess

This policy setting allows you to configure whether or not to display AM UI to the users. If you enable this setting AM UI won't be available to users.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Not allowed. Prevents users from accessing UI.
1 (Default) Allowed. Lets users access UI.

Group policy mapping:

Name Value
Name UX_Configuration_UILockdown
Friendly Name Enable headless UI mode
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Client Interface
Registry Key Name Software\Policies\Microsoft\Windows Defender\UX Configuration
Registry Value Name UILockdown
ADMX File Name WindowsDefender.admx

AttackSurfaceReductionOnlyExclusions

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1709 [10.0.16299] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AttackSurfaceReductionOnlyExclusions

Exclude files and paths from Attack Surface Reduction (ASR) rules.

Enabled: Specify the folders or files and resources that should be excluded from ASR rules in the Options section. Enter each rule on a new line as a name-value pair:

  • Name column: Enter a folder path or a fully qualified resource name. For example, ""C:\Windows"" will exclude all files in that directory. ""C:\Windows\App.exe"" will exclude only that specific file in that specific folder
  • Value column: Enter ""0"" for each item

Disabled: No exclusions will be applied to the ASR rules.

Not configured: Same as Disabled.

You can configure ASR rules in the Configure Attack Surface Reduction rules GP setting.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace
Allowed Values List (Delimiter: |)

Group policy mapping:

Name Value
Name ExploitGuard_ASR_ASROnlyExclusions
Friendly Name Exclude files and paths from Attack Surface Reduction Rules
Element Name Exclusions from ASR rules
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Microsoft Defender Exploit Guard > Attack Surface Reduction
Registry Key Name Software\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\ASR
Registry Value Name ExploitGuard_ASR_ASROnlyExclusions
ADMX File Name WindowsDefender.admx

AttackSurfaceReductionRules

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1709 [10.0.16299] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AttackSurfaceReductionRules

Set the state for each Attack Surface Reduction (ASR) rule.

After enabling this setting, you can set each rule to the following in the Options section:

  • Block: the rule will be applied
  • Audit Mode: if the rule would normally cause an event, then it will be recorded (although the rule will not actually be applied)
  • Off: the rule will not be applied
  • Not Configured: the rule is enabled with default values
  • Warn: the rule will be applied and the end-user will have the option to bypass the block

Unless the ASR rule is disabled, a subsample of audit events are collected for ASR rules will the value of not configured.

Enabled: Specify the state for each ASR rule under the Options section for this setting. Enter each rule on a new line as a name-value pair:

  • Name column: Enter a valid ASR rule ID
  • Value column: Enter the status ID that relates to state you want to specify for the associated rule

The following status IDs are permitted under the value column:

  • 1 (Block)
  • 0 (Off)
  • 2 (Audit)
  • 5 (Not Configured)
  • 6 (Warn)

Example: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx 0 xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx 1 xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx 2

Disabled: No ASR rules will be configured.

Not configured: Same as Disabled.

You can exclude folders or files in the ""Exclude files and paths from Attack Surface Reduction Rules"" GP setting.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Group policy mapping:

Name Value
Name ExploitGuard_ASR_Rules
Friendly Name Configure Attack Surface Reduction rules
Element Name Set the state for each ASR rule
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Microsoft Defender Exploit Guard > Attack Surface Reduction
Registry Key Name Software\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\ASR
Registry Value Name ExploitGuard_ASR_Rules
ADMX File Name WindowsDefender.admx

AvgCPULoadFactor

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/AvgCPULoadFactor

This policy setting allows you to configure the maximum percentage CPU utilization permitted during a scan. Valid values for this setting are a percentage represented by the integers 5 to 100. A value of 0 indicates that there should be no throttling of CPU utilization. The default value is 50.

If you enable this setting, CPU utilization will not exceed the percentage specified.

If you disable or do not configure this setting, CPU utilization will not exceed the default value.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Allowed Values Range: [0-100]
Default Value 50

Group policy mapping:

Name Value
Name Scan_AvgCPULoadFactor
Friendly Name Specify the maximum percentage of CPU utilization during a scan
Element Name Specify the maximum percentage of CPU utilization during a scan
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name AvgCPULoadFactor
ADMX File Name WindowsDefender.admx

CheckForSignaturesBeforeRunningScan

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1809 [10.0.17763] and later
./Device/Vendor/MSFT/Policy/Config/Defender/CheckForSignaturesBeforeRunningScan

This policy setting allows you to manage whether a check for new virus and spyware security intelligence will occur before running a scan.

This setting applies to scheduled scans, but it has no effect on scans initiated manually from the user interface or to the ones started from the command line using "mpcmdrun -Scan".

If you enable this setting, a check for new security intelligence will occur before running a scan.

If you disable this setting or do not configure this setting, the scan will start using the existing security intelligence.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 0

Allowed values:

Value Description
0 (Default) Disabled
1 Enabled

Group policy mapping:

Name Value
Name CheckForSignaturesBeforeRunningScan
Friendly Name Check for the latest virus and spyware security intelligence before running a scheduled scan
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name CheckForSignaturesBeforeRunningScan
ADMX File Name WindowsDefender.admx

CloudBlockLevel

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1709 [10.0.16299] and later
./Device/Vendor/MSFT/Policy/Config/Defender/CloudBlockLevel

This policy setting determines how aggressive Windows Defender Antivirus will be in blocking and scanning suspicious files. Value type is integer. If this setting is on, Windows Defender Antivirus will be more aggressive when identifying suspicious files to block and scan; otherwise, it will be less aggressive and therefore block and scan with less frequency. For more information about specific values that are supported, see the Windows Defender Antivirus documentation site. NoteThis feature requires the Join Microsoft MAPS setting enabled in order to function.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 0

Allowed values:

Value Description
0 (Default) NotConfigured
2 High
4 HighPlus
6 ZeroTolerance

Group policy mapping:

Name Value
Name MpCloudBlockLevel
Friendly Name Select cloud protection level
Element Name Select cloud blocking level
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > MpEngine
Registry Key Name Software\Policies\Microsoft\Windows Defender\MpEngine
Registry Value Name MpCloudBlockLevel
ADMX File Name WindowsDefender.admx

CloudExtendedTimeout

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1709 [10.0.16299] and later
./Device/Vendor/MSFT/Policy/Config/Defender/CloudExtendedTimeout

This feature allows Windows Defender Antivirus to block a suspicious file for up to 60 seconds, and scan it in the cloud to make sure it's safe. Value type is integer, range is 0 - 50. The typical cloud check timeout is 10 seconds. To enable the extended cloud check feature, specify the extended time in seconds, up to an additional 50 seconds. For example, if the desired timeout is 60 seconds, specify 50 seconds in this setting, which will enable the extended cloud check feature, and will raise the total time to 60 seconds. NoteThis feature depends on three other MAPS settings the must all be enabled- Configure the 'Block at First Sight' feature; Join Microsoft MAPS; Send file samples when further analysis is required.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Allowed Values Range: [0-50]
Default Value 0

Group policy mapping:

Name Value
Name MpBafsExtendedTimeout
Friendly Name Configure extended cloud check
Element Name Specify the extended cloud check time in seconds
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > MpEngine
Registry Key Name Software\Policies\Microsoft\Windows Defender\MpEngine
Registry Value Name MpBafsExtendedTimeout
ADMX File Name WindowsDefender.admx

ControlledFolderAccessAllowedApplications

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1709 [10.0.16299] and later
./Device/Vendor/MSFT/Policy/Config/Defender/ControlledFolderAccessAllowedApplications

Add additional applications that should be considered "trusted" by controlled folder access.

These applications are allowed to modify or delete files in controlled folder access folders.

Microsoft Defender Antivirus automatically determines which applications should be trusted. You can configure this setting to add additional applications.

Enabled: Specify additional allowed applications in the Options section..

Disabled: No additional applications will be added to the trusted list.

Not configured: Same as Disabled.

You can enable controlled folder access in the Configure controlled folder access GP setting.

Default system folders are automatically guarded, but you can add folders in the configure protected folders GP setting.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace
Allowed Values List (Delimiter: |)

Group policy mapping:

Name Value
Name ExploitGuard_ControlledFolderAccess_AllowedApplications
Friendly Name Configure allowed applications
Element Name Enter the applications that should be trusted
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Microsoft Defender Exploit Guard > Controlled Folder Access
Registry Key Name Software\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\Controlled Folder Access
Registry Value Name ExploitGuard_ControlledFolderAccess_AllowedApplications
ADMX File Name WindowsDefender.admx

ControlledFolderAccessProtectedFolders

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1709 [10.0.16299] and later
./Device/Vendor/MSFT/Policy/Config/Defender/ControlledFolderAccessProtectedFolders

Specify additional folders that should be guarded by the Controlled folder access feature.

Files in these folders cannot be modified or deleted by untrusted applications.

Default system folders are automatically protected. You can configure this setting to add additional folders. The list of default system folders that are protected is shown in Windows Security.

Enabled: Specify additional folders that should be protected in the Options section.

Disabled: No additional folders will be protected.

Not configured: Same as Disabled.

You can enable controlled folder access in the Configure controlled folder access GP setting.

Microsoft Defender Antivirus automatically determines which applications can be trusted. You can add additional trusted applications in the Configure allowed applications GP setting.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace
Allowed Values List (Delimiter: |)

Group policy mapping:

Name Value
Name ExploitGuard_ControlledFolderAccess_ProtectedFolders
Friendly Name Configure protected folders
Element Name Enter the folders that should be guarded
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Microsoft Defender Exploit Guard > Controlled Folder Access
Registry Key Name Software\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\Controlled Folder Access
Registry Value Name ExploitGuard_ControlledFolderAccess_ProtectedFolders
ADMX File Name WindowsDefender.admx

DaysToRetainCleanedMalware

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1507 [10.0.10240] and later
./Device/Vendor/MSFT/Policy/Config/Defender/DaysToRetainCleanedMalware

This policy setting defines the number of days items should be kept in the Quarantine folder before being removed.

If you enable this setting, items will be removed from the Quarantine folder after the number of days specified.

If you disable or do not configure this setting, items will be kept in the quarantine folder indefinitely and will not be automatically removed.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Allowed Values Range: [0-90]
Default Value 0

Group policy mapping:

Name Value
Name Quarantine_PurgeItemsAfterDelay
Friendly Name Configure removal of items from Quarantine folder
Element Name Configure removal of items from Quarantine folder
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Quarantine
Registry Key Name Software\Policies\Microsoft\Windows Defender\Quarantine
Registry Value Name PurgeItemsAfterDelay
ADMX File Name WindowsDefender.admx

DisableCatchupFullScan

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1809 [10.0.17763] and later
./Device/Vendor/MSFT/Policy/Config/Defender/DisableCatchupFullScan

This policy setting allows you to configure catch-up scans for scheduled full scans. A catch-up scan is a scan that is initiated because a regularly scheduled scan was missed. Usually these scheduled scans are missed because the computer was turned off at the scheduled time.

If you enable this setting, catch-up scans for scheduled full scans will be turned on. If a computer is offline for two consecutive scheduled scans, a catch-up scan is started the next time someone logs on to the computer. If there is no scheduled scan configured, there will be no catch-up scan run.

If you disable or do not configure this setting, catch-up scans for scheduled full scans will be turned off.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Enabled
1 (Default) Disabled

Group policy mapping:

Name Value
Name Scan_DisableCatchupFullScan
Friendly Name Turn on catch-up full scan
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name DisableCatchupFullScan
ADMX File Name WindowsDefender.admx

DisableCatchupQuickScan

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1809 [10.0.17763] and later
./Device/Vendor/MSFT/Policy/Config/Defender/DisableCatchupQuickScan

This policy setting allows you to configure catch-up scans for scheduled quick scans. A catch-up scan is a scan that is initiated because a regularly scheduled scan was missed. Usually these scheduled scans are missed because the computer was turned off at the scheduled time.

If you enable this setting, catch-up scans for scheduled quick scans will be turned on. If a computer is offline for two consecutive scheduled scans, a catch-up scan is started the next time someone logs on to the computer. If there is no scheduled scan configured, there will be no catch-up scan run.

If you disable or do not configure this setting, catch-up scans for scheduled quick scans will be turned off.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Enabled
1 (Default) Disabled

Group policy mapping:

Name Value
Name Scan_DisableCatchupQuickScan
Friendly Name Turn on catch-up quick scan
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name DisableCatchupQuickScan
ADMX File Name WindowsDefender.admx

EnableControlledFolderAccess

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1709 [10.0.16299] and later
./Device/Vendor/MSFT/Policy/Config/Defender/EnableControlledFolderAccess

Enable or disable controlled folder access for untrusted applications. You can choose to block, audit, or allow attempts by untrusted apps to:

  • Modify or delete files in protected folders, such as the Documents folder
  • Write to disk sectors

You can also choose to only block or audit writes to disk sectors while still allowing the modification or deletion of files in protected folders.

Microsoft Defender Antivirus automatically determines which applications can be trusted. You can add additional trusted applications in the Configure allowed applications GP setting. Default system folders are automatically protected, but you can add folders in the Configure protected folders GP setting.

Block: The following will be blocked:

  • Attempts by untrusted apps to modify or delete files in protected folders
  • Attempts by untrusted apps to write to disk sectors The Windows event log will record these blocks under Applications and Services Logs > Microsoft > Windows > Windows Defender > Operational > ID 1123.

Disabled: The following will not be blocked and will be allowed to run:

  • Attempts by untrusted apps to modify or delete files in protected folders
  • Attempts by untrusted apps to write to disk sectors These attempts will not be recorded in the Windows event log.

Audit Mode: The following will not be blocked and will be allowed to run:

  • Attempts by untrusted apps to modify or delete files in protected folders
  • Attempts by untrusted apps to write to disk sectors The Windows event log will record these attempts under Applications and Services Logs > Microsoft > Windows > Windows Defender > Operational > ID 1124.

Block disk modification only: The following will be blocked:

  • Attempts by untrusted apps to write to disk sectors The Windows event log will record these attempts under Applications and Services Logs > Microsoft > Windows > Windows Defender > Operational > ID 1123.

The following will not be blocked and will be allowed to run:

  • Attempts by untrusted apps to modify or delete files in protected folders These attempts will not be recorded in the Windows event log.

Audit disk modification only: The following will not be blocked and will be allowed to run:

  • Attempts by untrusted apps to write to disk sectors
  • Attempts by untrusted apps to modify or delete files in protected folders Only attempts to write to protected disk sectors will be recorded in the Windows event log (under Applications and Services Logs > Microsoft > Windows > Windows Defender > Operational > ID 1124). Attempts to modify or delete files in protected folders will not be recorded.

Not configured: Same as Disabled.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 0

Allowed values:

Value Description
0 (Default) Disabled
1 Enabled
2 Audit Mode

Group policy mapping:

Name Value
Name ExploitGuard_ControlledFolderAccess_EnableControlledFolderAccess
Friendly Name Configure Controlled folder access
Element Name Configure the guard my folders feature
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Microsoft Defender Exploit Guard > Controlled Folder Access
Registry Key Name Software\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\Controlled Folder Access
Registry Value Name EnableControlledFolderAccess
ADMX File Name WindowsDefender.admx

EnableLowCPUPriority

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1809 [10.0.17763] and later
./Device/Vendor/MSFT/Policy/Config/Defender/EnableLowCPUPriority

This policy setting allows you to enable or disable low CPU priority for scheduled scans.

If you enable this setting, low CPU priority will be used during scheduled scans.

If you disable or do not configure this setting, not changes will be made to CPU priority for scheduled scans.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 0

Allowed values:

Value Description
0 (Default) Disabled
1 Enabled

Group policy mapping:

Name Value
Name Scan_LowCpuPriority
Friendly Name Configure low CPU priority for scheduled scans
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name LowCpuPriority
ADMX File Name WindowsDefender.admx

EnableNetworkProtection

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1709 [10.0.16299] and later
./Device/Vendor/MSFT/Policy/Config/Defender/EnableNetworkProtection

Enable or disable Microsoft Defender Exploit Guard network protection to prevent employees from using any application to access dangerous domains that may host phishing scams, exploit-hosting sites, and other malicious content on the Internet.

Enabled: Specify the mode in the Options section: -Block: Users and applications will not be able to access dangerous domains -Audit Mode: Users and applications can connect to dangerous domains, however if this feature would have blocked access if it were set to Block, then a record of the event will be in the event logs.

Disabled: Users and applications will not be blocked from connecting to dangerous domains.

Not configured: Same as Disabled.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 0

Allowed values:

Value Description
0 (Default) Disabled
1 Enabled (block mode)
2 Enabled (audit mode)

Group policy mapping:

Name Value
Name ExploitGuard_EnableNetworkProtection
Friendly Name Prevent users and apps from accessing dangerous websites
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Microsoft Defender Exploit Guard > Network Protection
Registry Key Name Software\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\Network Protection
Registry Value Name EnableNetworkProtection
ADMX File Name WindowsDefender.admx

ExcludedExtensions

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/ExcludedExtensions

Allows an administrator to specify a list of file type extensions to ignore during a scan. Each file type in the list must be separated by a |. For example, lib|obj.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace
Allowed Values List (Delimiter: |)

Group policy mapping:

Name Value
Name Exclusions_Extensions
Friendly Name Extension Exclusions
Element Name Extension Exclusions
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Exclusions
Registry Key Name Software\Policies\Microsoft\Windows Defender\Exclusions
Registry Value Name Exclusions_Extensions
ADMX File Name WindowsDefender.admx

ExcludedPaths

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/ExcludedPaths

Allows an administrator to specify a list of directory paths to ignore during a scan. Each path in the list must be separated by a |. For example, C:\Example|C:\Example1.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace
Allowed Values List (Delimiter: |)

Group policy mapping:

Name Value
Name Exclusions_Paths
Friendly Name Path Exclusions
Element Name Path Exclusions
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Exclusions
Registry Key Name Software\Policies\Microsoft\Windows Defender\Exclusions
Registry Value Name Exclusions_Paths
ADMX File Name WindowsDefender.admx

ExcludedProcesses

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/ExcludedProcesses

Allows an administrator to specify a list of files opened by processes to ignore during a scan. ImportantThe process itself is not excluded from the scan, but can be by using the Defender/ExcludedPaths policy to exclude its path. Each file type must be separated by a |. For example, C:\Example. exe|C:\Example1.exe.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace
Allowed Values List (Delimiter: |)

Group policy mapping:

Name Value
Name Exclusions_Processes
Friendly Name Process Exclusions
Element Name Process Exclusions
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Exclusions
Registry Key Name Software\Policies\Microsoft\Windows Defender\Exclusions
Registry Value Name Exclusions_Processes
ADMX File Name WindowsDefender.admx

PUAProtection

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/PUAProtection

Enable or disable detection for potentially unwanted applications. You can choose to block, audit, or allow when potentially unwanted software is being downloaded or attempts to install itself on your computer.

Enabled: Specify the mode in the Options section: -Block: Potentially unwanted software will be blocked. -Audit Mode: Potentially unwanted software will not be blocked, however if this feature would have blocked access if it were set to Block, then a record of the event will be in the event logs.

Disabled: Potentially unwanted software will not be blocked.

Not configured: Same as Disabled.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 0

Allowed values:

Value Description
0 (Default) PUA Protection off. Windows Defender will not protect against potentially unwanted applications.
1 PUA Protection on. Detected items are blocked. They will show in history along with other threats.
2 Audit mode. Windows Defender will detect potentially unwanted applications, but take no action. You can review information about the applications Windows Defender would have taken action against by searching for events created by Windows Defender in the Event Viewer.

Group policy mapping:

Name Value
Name Root_PUAProtection
Friendly Name Configure detection for potentially unwanted applications
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus
Registry Key Name Software\Policies\Microsoft\Windows Defender
Registry Value Name PUAProtection
ADMX File Name WindowsDefender.admx

RealTimeScanDirection

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1507 [10.0.10240] and later
./Device/Vendor/MSFT/Policy/Config/Defender/RealTimeScanDirection

This policy setting allows you to configure monitoring for incoming and outgoing files, without having to turn off monitoring entirely. It is recommended for use on servers where there is a lot of incoming and outgoing file activity but for performance reasons need to have scanning disabled for a particular scan direction. The appropriate configuration should be evaluated based on the server role.

Note that this configuration is only honored for NTFS volumes. For any other file system type, full monitoring of file and program activity will be present on those volumes.

The options for this setting are mutually exclusive: 0 = Scan incoming and outgoing files (default) 1 = Scan incoming files only 2 = Scan outgoing files only

Any other value, or if the value does not exist, resolves to the default (0).

If you enable this setting, the specified type of monitoring will be enabled.

If you disable or do not configure this setting, monitoring for incoming and outgoing files will be enabled.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 0

Allowed values:

Value Description
0 (Default) Monitor all files (bi-directional).
1 Monitor incoming files.
2 Monitor outgoing files.

Group policy mapping:

Name Value
Name RealtimeProtection_RealtimeScanDirection
Friendly Name Configure monitoring for incoming and outgoing file and program activity
Element Name Configure monitoring for incoming and outgoing file and program activity
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Real-time Protection
Registry Key Name Software\Policies\Microsoft\Windows Defender\Real-Time Protection
Registry Value Name RealtimeScanDirection
ADMX File Name WindowsDefender.admx

ScanParameter

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1507 [10.0.10240] and later
./Device/Vendor/MSFT/Policy/Config/Defender/ScanParameter

This policy setting allows you to specify the scan type to use during a scheduled scan. Scan type options are: 1 = Quick Scan (default) 2 = Full Scan

If you enable this setting, the scan type will be set to the specified value.

If you disable or do not configure this setting, the default scan type will used.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
1 (Default) Quick scan
2 Full scan

Group policy mapping:

Name Value
Name Scan_ScanParameters
Friendly Name Specify the scan type to use for a scheduled scan
Element Name Specify the scan type to use for a scheduled scan
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name ScanParameters
ADMX File Name WindowsDefender.admx

ScheduleQuickScanTime

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1507 [10.0.10240] and later
./Device/Vendor/MSFT/Policy/Config/Defender/ScheduleQuickScanTime

This policy setting allows you to specify the time of day at which to perform a daily quick scan. The time value is represented as the number of minutes past midnight (00:00). For example, 120 (0x78) is equivalent to 02:00 AM. By default, this setting is set to disabled. The schedule is based on local time on the computer where the scan is executing.

If you enable this setting, a daily quick scan will run at the time of day specified.

If you disable or do not configure this setting, daily quick scan controlled by this config will not be run.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Allowed Values Range: [0-1380]
Default Value 120

Group policy mapping:

Name Value
Name Scan_ScheduleQuickScantime
Friendly Name Specify the time for a daily quick scan
Element Name Specify the time for a daily quick scan
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name ScheduleQuickScanTime
ADMX File Name WindowsDefender.admx

ScheduleScanDay

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1507 [10.0.10240] and later
./Device/Vendor/MSFT/Policy/Config/Defender/ScheduleScanDay

This policy setting allows you to specify the day of the week on which to perform a scheduled scan. The scan can also be configured to run every day or to never run at all.

This setting can be configured with the following ordinal number values: (0x0) Every Day (0x1) Sunday (0x2) Monday (0x3) Tuesday (0x4) Wednesday (0x5) Thursday (0x6) Friday (0x7) Saturday (0x8) Never (default)

If you enable this setting, a scheduled scan will run at the frequency specified.

If you disable or do not configure this setting, a scheduled scan will run at a default frequency.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 0

Allowed values:

Value Description
0 (Default) Every day
1 Sunday
2 Monday
3 Tuesday
4 Wednesday
5 Thursday
6 Friday
7 Saturday
8 No scheduled scan

Group policy mapping:

Name Value
Name Scan_ScheduleDay
Friendly Name Specify the day of the week to run a scheduled scan
Element Name Specify the day of the week to run a scheduled scan
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name ScheduleDay
ADMX File Name WindowsDefender.admx

ScheduleScanTime

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1507 [10.0.10240] and later
./Device/Vendor/MSFT/Policy/Config/Defender/ScheduleScanTime

This policy setting allows you to specify the time of day at which to perform a scheduled scan. The time value is represented as the number of minutes past midnight (00:00). For example, 120 (0x78) is equivalent to 02:00 AM. By default, this setting is set to a time value of 2:00 AM. The schedule is based on local time on the computer where the scan is executing.

If you enable this setting, a scheduled scan will run at the time of day specified.

If you disable or do not configure this setting, a scheduled scan will run at a default time.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Allowed Values Range: [0-1380]
Default Value 120

Group policy mapping:

Name Value
Name Scan_ScheduleTime
Friendly Name Specify the time of day to run a scheduled scan
Element Name Specify the time of day to run a scheduled scan
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Scan
Registry Key Name Software\Policies\Microsoft\Windows Defender\Scan
Registry Value Name ScheduleTime
ADMX File Name WindowsDefender.admx

SecurityIntelligenceLocation

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1903 [10.0.18362] and later
./Device/Vendor/MSFT/Policy/Config/Defender/SecurityIntelligenceLocation

This policy setting allows you to define the security intelligence location for VDI-configured computers.

If you disable or do not configure this setting, security intelligence will be referred from the default local source.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Group policy mapping:

Name Value
Name SignatureUpdate_SharedSignaturesLocation
Friendly Name Define security intelligence location for VDI clients.
Element Name Define file share for downloading security intelligence updates in virtual environments
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Security Intelligence Updates
Registry Key Name Software\Policies\Microsoft\Windows Defender\Signature Updates
ADMX File Name WindowsDefender.admx

SignatureUpdateFallbackOrder

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1809 [10.0.17763] and later
./Device/Vendor/MSFT/Policy/Config/Defender/SignatureUpdateFallbackOrder

This policy setting allows you to define the order in which different security intelligence update sources should be contacted. The value of this setting should be entered as a pipe-separated string enumerating the security intelligence update sources in order. Possible values are: “InternalDefinitionUpdateServer”, “MicrosoftUpdateServer”, “MMPC”, and “FileShares”

For example: { InternalDefinitionUpdateServer | MicrosoftUpdateServer | MMPC }

If you enable this setting, security intelligence update sources will be contacted in the order specified. Once security intelligence updates have been successfully downloaded from one specified source, the remaining sources in the list will not be contacted.

If you disable or do not configure this setting, security intelligence update sources will be contacted in a default order.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace
Allowed Values List (Delimiter: |)

Group policy mapping:

Name Value
Name SignatureUpdate_FallbackOrder
Friendly Name Define the order of sources for downloading security intelligence updates
Element Name Define the order of sources for downloading security intelligence updates
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Security Intelligence Updates
Registry Key Name Software\Policies\Microsoft\Windows Defender\Signature Updates
ADMX File Name WindowsDefender.admx

SignatureUpdateFileSharesSources

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1809 [10.0.17763] and later
./Device/Vendor/MSFT/Policy/Config/Defender/SignatureUpdateFileSharesSources

This policy setting allows you to configure UNC file share sources for downloading security intelligence updates. Sources will be contacted in the order specified. The value of this setting should be entered as a pipe-separated string enumerating the security intelligence update sources. For example: "{\unc1 | \unc2 }". The list is empty by default.

If you enable this setting, the specified sources will be contacted for security intelligence updates. Once security intelligence updates have been successfully downloaded from one specified source, the remaining sources in the list will not be contacted.

If you disable or do not configure this setting, the list will remain empty by default and no sources will be contacted.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace
Allowed Values List (Delimiter: |)

Group policy mapping:

Name Value
Name SignatureUpdate_DefinitionUpdateFileSharesSources
Friendly Name Define file shares for downloading security intelligence updates
Element Name Define file shares for downloading security intelligence updates
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Security Intelligence Updates
Registry Key Name Software\Policies\Microsoft\Windows Defender\Signature Updates
ADMX File Name WindowsDefender.admx

SignatureUpdateInterval

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1507 [10.0.10240] and later
./Device/Vendor/MSFT/Policy/Config/Defender/SignatureUpdateInterval

This policy setting allows you to specify an interval at which to check for security intelligence updates. The time value is represented as the number of hours between update checks. Valid values range from 1 (every hour) to 24 (once per day).

If you enable this setting, checks for security intelligence updates will occur at the interval specified.

If you disable or do not configure this setting, checks for security intelligence updates will occur at the default interval.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Allowed Values Range: [0-24]
Default Value 8

Group policy mapping:

Name Value
Name SignatureUpdate_SignatureUpdateInterval
Friendly Name Specify the interval to check for security intelligence updates
Element Name Specify the interval to check for security intelligence updates
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Security Intelligence Updates
Registry Key Name Software\Policies\Microsoft\Windows Defender\Signature Updates
Registry Value Name SignatureUpdateInterval
ADMX File Name WindowsDefender.admx

SubmitSamplesConsent

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1507 [10.0.10240] and later
./Device/Vendor/MSFT/Policy/Config/Defender/SubmitSamplesConsent

This policy setting configures behaviour of samples submission when opt-in for MAPS telemetry is set.

Possible options are: (0x0) Always prompt (0x1) Send safe samples automatically (0x2) Never send (0x3) Send all samples automatically

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Default Value 1

Allowed values:

Value Description
0 Always prompt.
1 (Default) Send safe samples automatically.
2 Never send.
3 Send all samples automatically.

Group policy mapping:

Name Value
Name SubmitSamplesConsent
Friendly Name Send file samples when further analysis is required
Element Name Send file samples when further analysis is required
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > MAPS
Registry Key Name Software\Policies\Microsoft\Windows Defender\Spynet
Registry Value Name SubmitSamplesConsent
ADMX File Name WindowsDefender.admx

ThreatSeverityDefaultAction

Scope Editions Applicable OS
✔️ Device
❌ User
❌ Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 1607 [10.0.14393] and later
./Device/Vendor/MSFT/Policy/Config/Defender/ThreatSeverityDefaultAction

Allows an administrator to specify any valid threat severity levels and the corresponding default action ID to take. This value is a list of threat severity level IDs and corresponding actions, separated by a | using the format threat level=action|threat level=action. For example, 1=6|2=2|4=10|5=3. The following list shows the supported values for threat severity levels:1 – Low severity threats2 – Moderate severity threats4 – High severity threats5 – Severe threatsThe following list shows the supported values for possible actions:1 – Clean. Service tries to recover files and try to disinfect. 2 – Quarantine. Moves files to quarantine. 3 – Remove. Removes files from system. 6 – Allow. Allows file/does none of the above actions. 8 – User defined. Requires user to make a decision on which action to take. 10 – Block. Blocks file execution.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Group policy mapping:

Name Value
Name Threats_ThreatSeverityDefaultAction
Friendly Name Specify threat alert levels at which default action should not be taken when detected
Element Name Specify threat alert levels at which default action should not be taken when detected
Location Computer Configuration
Path Windows Components > Microsoft Defender Antivirus > Threats
Registry Key Name Software\Policies\Microsoft\Windows Defender\Threats
Registry Value Name Threats_ThreatSeverityDefaultAction
ADMX File Name WindowsDefender.admx

Policy configuration service provider