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Policy CSP - Storage

Tip

This CSP contains ADMX-backed policies which require a special SyncML format to enable or disable. You must specify the data type in the SyncML as <Format>chr</Format>. For details, see Understanding ADMX-backed policies.

The payload of the SyncML must be XML-encoded; for this XML encoding, there are a variety of online encoders that you can use. To avoid encoding the payload, you can use CDATA if your MDM supports it. For more information, see CDATA Sections.

AllowDiskHealthModelUpdates

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 10, version 1709 [10.0.16299] and later
./Device/Vendor/MSFT/Policy/Config/Storage/AllowDiskHealthModelUpdates

Allows downloading new updates to ML Model parameters for predicting storage disk failure.

Enabled:

Updates would be downloaded for the Disk Failure Prediction Failure Model.

Disabled:

Updates wouldn't be downloaded for the Disk Failure Prediction Failure Model.

Not configured:

Same as Enabled.

Description framework properties:

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

Allowed values:

Value Description
0 Don't allow.
1 (Default) Allow.

Group policy mapping:

Name Value
Name SH_AllowDiskHealthModelUpdates
Friendly Name Allow downloading updates to the Disk Failure Prediction Model
Location Computer Configuration
Path System > Storage Health
Registry Key Name Software\Policies\Microsoft\Windows\StorageHealth
Registry Value Name AllowDiskHealthModelUpdates
ADMX File Name StorageHealth.admx

AllowStorageSenseGlobal

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 10, version 1903 [10.0.18362] and later
./Device/Vendor/MSFT/Policy/Config/Storage/AllowStorageSenseGlobal

Storage Sense can automatically clean some of the user's files to free up disk space. By default, Storage Sense is automatically turned on when the machine runs into low disk space and is set to run whenever the machine runs into storage pressure. This cadence can be changed in Storage settings or set with the "Configure Storage Sense cadence" group policy.

Enabled:

Storage Sense is turned on for the machine, with the default cadence as 'during low free disk space'. Users can't disable Storage Sense, but they can adjust the cadence (unless you also configure the "Configure Storage Sense cadence" group policy).

Disabled:

Storage Sense is turned off the machine. Users can't enable Storage Sense.

Not Configured:

By default, Storage Sense is turned off until the user runs into low disk space or the user enables it manually. Users can configure this setting in Storage settings.

Description framework properties:

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

Allowed values:

Value Description
1 Allow.
0 (Default) Block.

Group policy mapping:

Name Value
Name SS_AllowStorageSenseGlobal
Friendly Name Allow Storage Sense
Location Computer Configuration
Path System > Storage Sense
Registry Key Name Software\Policies\Microsoft\Windows\StorageSense
Registry Value Name AllowStorageSenseGlobal
ADMX File Name StorageSense.admx

AllowStorageSenseTemporaryFilesCleanup

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 10, version 1903 [10.0.18362] and later
./Device/Vendor/MSFT/Policy/Config/Storage/AllowStorageSenseTemporaryFilesCleanup

When Storage Sense runs, it can delete the user's temporary files that aren't in use.

If the group policy "Allow Storage Sense" is disabled, then this policy doesn't have any effect.

Enabled:

Storage Sense will delete the user's temporary files that aren't in use. Users can't disable this setting in Storage settings.

Disabled:

Storage Sense won't delete the user's temporary files. Users can't enable this setting in Storage settings.

Not Configured:

By default, Storage Sense will delete the user's temporary files. Users can configure this setting in Storage settings.

Description framework properties:

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

Allowed values:

Value Description
1 (Default) Allow.
0 Block.

Group policy mapping:

Name Value
Name SS_AllowStorageSenseTemporaryFilesCleanup
Friendly Name Allow Storage Sense Temporary Files cleanup
Location Computer Configuration
Path System > Storage Sense
Registry Key Name Software\Policies\Microsoft\Windows\StorageSense
Registry Value Name AllowStorageSenseTemporaryFilesCleanup
ADMX File Name StorageSense.admx

ConfigStorageSenseCloudContentDehydrationThreshold

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 10, version 1903 [10.0.18362] and later
./Device/Vendor/MSFT/Policy/Config/Storage/ConfigStorageSenseCloudContentDehydrationThreshold

When Storage Sense runs, it can dehydrate cloud-backed content that hasn't been opened in a certain amount of days.

If the group policy "Allow Storage Sense" is disabled, then this policy doesn't have any effect.

Enabled:

You must provide the minimum number of days a cloud-backed file can remain unopened before Storage Sense dehydrates it from the sync root. Supported values are: 0 - 365.

If you set this value to zero, Storage Sense won't dehydrate any cloud-backed content. The default value is 0, or never dehydrating cloud-backed content.

Disabled or Not Configured:

By default, Storage Sense won't dehydrate any cloud-backed content. Users can configure this setting in Storage settings.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Allowed Values Range: [0-365]
Default Value 0

Group policy mapping:

Name Value
Name SS_ConfigStorageSenseCloudContentDehydrationThreshold
Friendly Name Configure Storage Sense Cloud Content dehydration threshold
Location Computer Configuration
Path System > Storage Sense
Registry Key Name Software\Policies\Microsoft\Windows\StorageSense
ADMX File Name StorageSense.admx

ConfigStorageSenseDownloadsCleanupThreshold

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 10, version 1903 [10.0.18362] and later
./Device/Vendor/MSFT/Policy/Config/Storage/ConfigStorageSenseDownloadsCleanupThreshold

When Storage Sense runs, it can delete files in the user's Downloads folder if they haven't been opened for more than a certain number of days.

If the group policy "Allow Storage Sense" is disabled, then this policy doesn't have any effect.

Enabled:

You must provide the minimum number of days a file can remain unopened before Storage Sense deletes it from Downloads folder. Supported values are: 0 - 365.

If you set this value to zero, Storage Sense won't delete files in the user's Downloads folder. The default is 0, or never deleting files in the Downloads folder.

Disabled or Not Configured:

By default, Storage Sense won't delete files in the user's Downloads folder. Users can configure this setting in Storage settings.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Allowed Values Range: [0-365]
Default Value 0

Group policy mapping:

Name Value
Name SS_ConfigStorageSenseDownloadsCleanupThreshold
Friendly Name Configure Storage Storage Downloads cleanup threshold
Location Computer Configuration
Path System > Storage Sense
Registry Key Name Software\Policies\Microsoft\Windows\StorageSense
ADMX File Name StorageSense.admx

ConfigStorageSenseGlobalCadence

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 10, version 1903 [10.0.18362] and later
./Device/Vendor/MSFT/Policy/Config/Storage/ConfigStorageSenseGlobalCadence

Storage Sense can automatically clean some of the user's files to free up disk space.

If the group policy "Allow Storage Sense" is disabled, then this policy doesn't have any effect.

Enabled:

You must provide the desired Storage Sense cadence. Supported options are: daily, weekly, monthly, and during low free disk space. The default is 0 (during low free disk space).

Disabled or Not Configured:

By default, the Storage Sense cadence is set to "during low free disk space". Users can configure this setting in Storage settings.

Use the following integer values for the supported options:

  • 0: During low free disk space (default)
  • 1: Daily
  • 7: Weekly
  • 30: Monthly

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Allowed Values Range: [0-4294967295]
Default Value 0

Group policy mapping:

Name Value
Name SS_ConfigStorageSenseGlobalCadence
Friendly Name Configure Storage Sense cadence
Location Computer Configuration
Path System > Storage Sense
Registry Key Name Software\Policies\Microsoft\Windows\StorageSense
ADMX File Name StorageSense.admx

ConfigStorageSenseRecycleBinCleanupThreshold

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 10, version 1903 [10.0.18362] and later
./Device/Vendor/MSFT/Policy/Config/Storage/ConfigStorageSenseRecycleBinCleanupThreshold

When Storage Sense runs, it can delete files in the user's Recycle Bin if they've been there for over a certain amount of days.

If the group policy "Allow Storage Sense" is disabled, then this policy doesn't have any effect.

Enabled:

You must provide the minimum age threshold (in days) of a file in the Recycle Bin before Storage Sense will delete it. Supported values are: 0 - 365.

If you set this value to zero, Storage Sense won't delete files in the user's Recycle Bin. The default is 30 days.

Disabled or Not Configured:

By default, Storage Sense will delete files in the user's Recycle Bin that have been there for over 30 days. Users can configure this setting in Storage settings.

Description framework properties:

Property name Property value
Format int
Access Type Add, Delete, Get, Replace
Allowed Values Range: [0-365]
Default Value 30

Group policy mapping:

Name Value
Name SS_ConfigStorageSenseRecycleBinCleanupThreshold
Friendly Name Configure Storage Sense Recycle Bin cleanup threshold
Location Computer Configuration
Path System > Storage Sense
Registry Key Name Software\Policies\Microsoft\Windows\StorageSense
ADMX File Name StorageSense.admx

EnhancedStorageDevices

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 10, version 1703 [10.0.15063] and later
./Device/Vendor/MSFT/Policy/Config/Storage/EnhancedStorageDevices

This policy setting configures whether or not Windows will activate an Enhanced Storage device.

  • If you enable this policy setting, Windows won't activate unactivated Enhanced Storage devices.

  • If you disable or don't configure this policy setting, Windows will activate unactivated Enhanced Storage devices.

Description framework properties:

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

Tip

This is an ADMX-backed policy and requires SyncML format for configuration. For an example of SyncML format, refer to Enabling a policy.

ADMX mapping:

Name Value
Name TCGSecurityActivationDisabled
Friendly Name Do not allow Windows to activate Enhanced Storage devices
Location Computer Configuration
Path System > Enhanced Storage Access
Registry Key Name Software\Policies\Microsoft\Windows\EnhancedStorageDevices
Registry Value Name TCGSecurityActivationDisabled
ADMX File Name EnhancedStorage.admx

RemovableDiskDenyWriteAccess

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 10, version 1809 [10.0.17763] and later
./Device/Vendor/MSFT/Policy/Config/Storage/RemovableDiskDenyWriteAccess

This policy setting denies write access to removable disks.

  • If you enable this policy setting, write access is denied to this removable storage class.

  • If you disable or don't configure this policy setting, write access is allowed to this removable storage class.

Note

To require that users write data to BitLocker-protected storage, enable the policy setting "Deny write access to drives not protected by BitLocker," which is located in "Computer Configuration\Administrative Templates\Windows Components\BitLocker Drive Encryption\Removable Data Drives".

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 RemovableDisks_DenyWrite_Access_2
Friendly Name Removable Disks: Deny write access
Location Computer Configuration
Path System > Removable Storage Access
Registry Key Name Software\Policies\Microsoft\Windows\RemovableStorageDevices{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}
ADMX File Name RemovableStorage.admx

WPDDevicesDenyReadAccessPerDevice

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/Storage/WPDDevicesDenyReadAccessPerDevice

This policy setting denies read access to removable disks, which may include media players, cellular phones, auxiliary displays, and CE devices.

  • If you enable this policy setting, read access is denied to this removable storage class.

  • If you disable or don't configure this policy setting, read access is allowed to this removable storage class.

This policy does enforcement over the following protocols that are used by most portable devices, for example, mobile/IOS/Android:

  • Picture Transfer Protocol (PTP) over USB, IP, and Bluetooth.
  • Media Transfer Protocol (MTP) over USB, IP, and Bluetooth.
  • Mass Storage Class (MSC) over USB.

Note

WPD policy isn't a reliable policy for removable storage. You can't use WPD policy to entirely block removable storage. For example, if a user inserts a USB drive to a device with a WPD policy, the policy may block PTP or MTP, but the user can still browse the drive in Windows Explorer.

Description framework properties:

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

Tip

This is an ADMX-backed policy and requires SyncML format for configuration. For an example of SyncML format, refer to Enabling a policy.

ADMX mapping:

Name Value
Name WPDDevices_DenyRead_Access_2
Friendly Name WPD Devices: Deny read access
Location Computer Configuration
Path System > Removable Storage Access
Registry Key Name Software\Policies\Microsoft\Windows\RemovableStorageDevices{6AC27878-A6FA-4155-BA85-F98F491D4F33}
Registry Value Name Deny_Read
ADMX File Name RemovableStorage.admx

WPDDevicesDenyReadAccessPerUser

Scope Editions Applicable OS
❌ Device
✅ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 11, version 21H2 [10.0.22000] and later
./User/Vendor/MSFT/Policy/Config/Storage/WPDDevicesDenyReadAccessPerUser

This policy setting denies read access to removable disks, which may include media players, cellular phones, auxiliary displays, and CE devices.

  • If you enable this policy setting, read access is denied to this removable storage class.

  • If you disable or don't configure this policy setting, read access is allowed to this removable storage class.

This policy does enforcement over the following protocols that are used by most portable devices, for example, mobile/IOS/Android:

  • Picture Transfer Protocol (PTP) over USB, IP, and Bluetooth.
  • Media Transfer Protocol (MTP) over USB, IP, and Bluetooth.
  • Mass Storage Class (MSC) over USB.

Note

WPD policy isn't a reliable policy for removable storage. You can't use WPD policy to entirely block removable storage. For example, if a user inserts a USB drive to a device with a WPD policy, the policy may block PTP or MTP, but the user can still browse the drive in Windows Explorer.

Description framework properties:

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

Tip

This is an ADMX-backed policy and requires SyncML format for configuration. For an example of SyncML format, refer to Enabling a policy.

ADMX mapping:

Name Value
Name WPDDevices_DenyRead_Access_1
Friendly Name WPD Devices: Deny read access
Location User Configuration
Path System > Removable Storage Access
Registry Key Name Software\Policies\Microsoft\Windows\RemovableStorageDevices{6AC27878-A6FA-4155-BA85-F98F491D4F33}
Registry Value Name Deny_Read
ADMX File Name RemovableStorage.admx

WPDDevicesDenyWriteAccessPerDevice

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/Storage/WPDDevicesDenyWriteAccessPerDevice

This policy setting denies write access to removable disks, which may include media players, cellular phones, auxiliary displays, and CE devices.

  • If you enable this policy setting, write access is denied to this removable storage class.

  • If you disable or don't configure this policy setting, write access is allowed to this removable storage class.

This policy does enforcement over the following protocols that are used by most portable devices, for example, mobile/IOS/Android:

  • Picture Transfer Protocol (PTP) over USB, IP, and Bluetooth.
  • Media Transfer Protocol (MTP) over USB, IP, and Bluetooth.
  • Mass Storage Class (MSC) over USB.

Note

WPD policy isn't a reliable policy for removable storage. You can't use WPD policy to entirely block removable storage. For example, if a user inserts a USB drive to a device with a WPD policy, the policy may block PTP or MTP, but the user can still browse the drive in Windows Explorer.

Description framework properties:

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

Tip

This is an ADMX-backed policy and requires SyncML format for configuration. For an example of SyncML format, refer to Enabling a policy.

ADMX mapping:

Name Value
Name WPDDevices_DenyWrite_Access_2
Friendly Name WPD Devices: Deny write access
Location Computer Configuration
Path System > Removable Storage Access
Registry Key Name Software\Policies\Microsoft\Windows\RemovableStorageDevices{6AC27878-A6FA-4155-BA85-F98F491D4F33}
Registry Value Name Deny_Write
ADMX File Name RemovableStorage.admx

WPDDevicesDenyWriteAccessPerUser

Scope Editions Applicable OS
❌ Device
✅ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 11, version 21H2 [10.0.22000] and later
./User/Vendor/MSFT/Policy/Config/Storage/WPDDevicesDenyWriteAccessPerUser

This policy setting denies write access to removable disks, which may include media players, cellular phones, auxiliary displays, and CE devices.

  • If you enable this policy setting, write access is denied to this removable storage class.

  • If you disable or don't configure this policy setting, write access is allowed to this removable storage class.

This policy does enforcement over the following protocols that are used by most portable devices, for example, mobile/IOS/Android:

  • Picture Transfer Protocol (PTP) over USB, IP, and Bluetooth.
  • Media Transfer Protocol (MTP) over USB, IP, and Bluetooth.
  • Mass Storage Class (MSC) over USB.

Note

WPD policy isn't a reliable policy for removable storage. You can't use WPD policy to entirely block removable storage. For example, if a user inserts a USB drive to a device with a WPD policy, the policy may block PTP or MTP, but the user can still browse the drive in Windows Explorer.

Description framework properties:

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

Tip

This is an ADMX-backed policy and requires SyncML format for configuration. For an example of SyncML format, refer to Enabling a policy.

ADMX mapping:

Name Value
Name WPDDevices_DenyWrite_Access_1
Friendly Name WPD Devices: Deny write access
Location User Configuration
Path System > Removable Storage Access
Registry Key Name Software\Policies\Microsoft\Windows\RemovableStorageDevices{6AC27878-A6FA-4155-BA85-F98F491D4F33}
Registry Value Name Deny_Write
ADMX File Name RemovableStorage.admx

Policy configuration service provider