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Windows Update Agent API

Overview of the Windows Update Agent API technology.

To develop Windows Update Agent API, you need these headers:

For programming guidance for this technology, see:

Enumerations

 
AddServiceFlag

Defines the possible ways in which the IUpdateServiceManager2 interface can process service registration requests.
AutoDownloadMode

Defines the types of logic that is used to determine whether Automatic Updates will automatically download an update once it is determined to be applicable for the computer.
AutomaticUpdatesNotificationLevel

Defines the possible ways in which elevated users are notified about Automatic Updates events.
AutomaticUpdatesPermissionType

Defines the possible ways to set the NotificationLevel property of the IAutomaticUpdatesSettings interface or the IncludeRecommendedUpdates property of the IAutomaticUpdatesSettings2 interface.
AutomaticUpdatesScheduledInstallationDay

Defines the days of the week when Automatic Updates installs or uninstalls updates.
AutomaticUpdatesUserType

Defines the type of user.
AutoSelectionMode

Defines the types of logic that is used to determine whether a particular update will be automatically selected when the user views available updates in the Windows Update user interface.
DeploymentAction

Defines the action for which an update is explicitly deployed.
DownloadPhase

Defines the progress of the download of the current update that is returned by the CurrentUpdateDownloadPhase property of the IDownloadProgress interface.
DownloadPriority

Defines the possible priorities for a download operation.
DownloadType

Specifies the type of download to perform.
InstallationImpact

Defines the possible levels of impact that can be caused by installing or uninstalling an update.
InstallationRebootBehavior

Defines the possible restart behaviors for an update.
OperationResultCode

Defines the possible results of a download, install, uninstall, or verification operation on an update.
SearchScope

Defines the variety of updates that should be returned by the search:_per-machine updates, per-user updates, or both.
UpdateExceptionContext

Defines the context in which an IUpdateException object can be provided.
UpdateLockdownOption

Defines the functionality that the Windows Update Agent (WUA) object can access from Windows Update.
UpdateOperation

Defines operations that can be attempted on an update.
UpdateServiceOption

Defines the options that affect how the service registration for a scan package service is removed.
UpdateServiceRegistrationState

Defines the possible states for an update service.
UpdateType

Defines the types of update, such as a driver or software update.

Functions

 
AcceptEula

Accepts the Microsoft Software License Terms that are associated with Windows Update.
Add

Adds an item to the collection. (IStringCollection.Add)
Add

Adds an item to the collection. (IUpdateCollection.Add)
AddScanPackageService

Registers a scan package as a service with Windows Update Agent (WUA) and then returns an IUpdateService interface.
AddService

Registers a service with Windows Update Agent (WUA).
AddService2

Registers a service with Windows Update Agent (WUA) without requiring an authorization cabinet file (.cab). This method also returns a pointer to an IUpdateServiceRegistration interface.
BeginDownload

Starts an asynchronous download of the content files that are associated with the updates.
BeginDownload2

Starts an asynchronous download of the content files that are associated with the updates. (IUpdateDownloaderEx)
BeginInstall

Starts an asynchronous installation of the updates.
BeginSearch

Begins execution of an asynchronous search for updates. The search uses the search options that are currently configured.
BeginUninstall

Starts an asynchronous uninstallation of the updates.
CheckPermission

Determines whether a specific user or type of user has permission to perform a selected action.
CleanUp

Waits for an asynchronous operation to be completed and releases all callbacks.
CleanUp

Waits for an asynchronous operation to be completed and then releases all the callbacks.
CleanUp

Waits for an asynchronous operation to complete and then releases all the callbacks.
Clear

Removes all the elements from the collection. (IStringCollection.Clear)
Clear

Removes all the elements from the collection. (IUpdateCollection.Clear)
Commit

Finalizes updates that were previously staged or installed.
Copy

Creates a deep read/write copy of the collection.
Copy

Creates a shallow read/write copy of the collection.
CopyFromCache

Copies the contents of an update to a specified path.
CopyToCache

Copies files for an update from a specified source location to the internal Windows Update Agent (WUA) download cache.
CopyToCache

Copies the external update binaries to an update.
CreateUpdateDownloader

Returns an IUpdateDownloader interface for this session.
CreateUpdateInstaller

Returns an IUpdateInstaller interface for this session.
CreateUpdateSearcher

Returns an IUpdateSearcher interface for this session.
CreateUpdateServiceManager

Returns a pointer to an IUpdateServiceManager2 interface for the session.
DetectNow

Begins the Automatic Updates detection task if Automatic Updates is enabled. If any updates are detected, the installation behavior is determined by the NotificationLevel property of the IAutomaticUpdatesSettings interface.
Download

Starts a synchronous download of the content files that are associated with the updates.
Download2

Starts a synchronous download of the content files that are associated with the updates. (IUpdateDownloaderEx)
EnableService

Enables all the components that Automatic Updates requires.
EndDownload

Completes an asynchronous download.
EndInstall

Completes an asynchronous installation of the updates.
EndSearch

Completes an asynchronous search for updates.
EndUninstall

Completes an asynchronous uninstallation of the updates.
EscapeString

Converts a string into a string that can be used as a literal value in a search criteria string.
EvaluateExtendedDynamicProperty

Evaluates the value of an extended dynamic property.
get__NewEnum

Gets an IEnumVARIANT interface that can be used to enumerate the collection. (ICategoryCollection.get__NewEnum)
get__NewEnum

Gets an IEnumVARIANT interface that can be used to enumerate the collection. (IStringCollection.get__NewEnum)
get__NewEnum

Gets an IEnumVARIANT interface that can be used to enumerate the collection. (IUpdateCollection.get__NewEnum)
get__NewEnum

Gets an IEnumVARIANT interface that is used to enumerate the collection. (IUpdateDownloadContentCollection.get__NewEnum)
get__NewEnum

Gets an IEnumVARIANT interface that can be used to enumerate the collection. (IUpdateExceptionCollection.get__NewEnum)
get__NewEnum

Gets an IEnumVARIANT interface that can be used to enumerate the collection. (IUpdateHistoryEntryCollection.get__NewEnum)
get__NewEnum

Gets an IEnumVARIANT interface that can be used to enumerate the collection. (IUpdateServiceCollection.get__NewEnum)
get__NewEnum

Gets an IEnumVARIANT interface that is used to enumerate the collection. (IWindowsDriverUpdateEntryCollection.get__NewEnum)
get_Address

Gets and sets the address and the decimal port number of the proxy server. (Get)
get_AllowSourcePrompts

Gets and sets a Boolean value that indicates whether to show source prompts to the user when installing the updates. (Get)
get_AltText

Gets the alternate text for the image.
get_AsyncState

Gets the caller-specific state object that is passed to the IUpdateDownloader.BeginDownload method.
get_AsyncState

Gets the caller-specific state object that is passed to the IUpdateInstaller.BeginInstall method or to the IUpdateInstaller.BeginUninstall method.
get_AsyncState

Gets the caller-specific state object that is passed to the IUpdateSearch.BeginSearch method.
get_AttemptCloseAppsIfNecessary

Gets a value indicating whether the update installer will attempt to close applications, blocking immediate installation of updates.
get_AutoDetect

Gets and sets a Boolean value that indicates whether IWebProxy automatically detects proxy settings. (Get)
get_AutoDownload

Gets a value indicating the automatic download mode of update.
get_AutoDownload

Gets an AutoDownloadMode value that indicates the automatic download mode of update.
get_AutoSelection

Gets a value indicating the automatic selection mode of update in the Control Panel of Windows Update.
get_AutoSelection

Gets an AutoSelectionMode value indicating the automatic selection mode of an update in the Control Panel of Windows Update.
get_AutoSelectOnWebSites

Gets a Boolean value that indicates whether the update is flagged to be automatically selected by Windows Update.
get_BrowseOnly

Gets a Boolean value that indicates whether an update can be discovered only by browsing through the available updates. (IUpdate3.get_BrowseOnly)
get_BrowseOnly

Gets a Boolean value that indicates whether an update can be discovered only by browsing through the available updates. (IWindowsDriverUpdate3.get_BrowseOnly)
get_BundledUpdates

Gets an interface that contains information about the ordered list of the bundled updates for the update.
get_BypassList

Gets and sets a collection of addresses that do not use the proxy server. (Get)
get_BypassProxyOnLocal

Gets and sets a Boolean value that indicates whether local addresses bypass the proxy server. (Get)
get_CanAutomaticallyUpgradeService

Gets and sets a Boolean value that indicates whether future calls to the BeginSearch and Search methods result in an automatic upgrade to Windows Update Agent (WUA). (Get)
get_CanRegisterWithAU

Gets a Boolean value that indicates whether the service can register with Automatic Updates.
get_CanRequestUserInput

Gets a Boolean value thast indicates whether the installation or uninstallation of an update can prompt for user input.
get_CanRequireSource

Gets a Boolean value that indicates whether the source media of the update is required for installation or uninstallation.
get_Categories

Gets an interface that contains a collection of categories to which the update belongs.
get_Categories

Gets a collection of the update categories to which an update belongs.
get_CategoryID

Gets the identifier of the category.
get_Children

Gets an interface collection that contains the child categories of this category.
get_ClientApplicationID

Gets and sets the current client application. (IUpdateDownloader.get_ClientApplicationID)
get_ClientApplicationID

Gets the identifier of the client application that processed an update.
get_ClientApplicationID

Gets and sets the current client application. (IUpdateInstaller.get_ClientApplicationID)
get_ClientApplicationID

Identifies the current client application. (Get)
get_ClientApplicationID

Gets and sets the identifier of the current client application. (Get)
get_ClientApplicationID

Gets and sets the current client application. (IUpdateSession.get_ClientApplicationID)
get_ContentValidationCert

Gets an SHA-1 hash of the certificate that is used to sign the contents of the service.
get_Context

Gets the context of search results.
get_Count

Gets the number of elements in the collection. (ICategoryCollection.get_Count)
get_Count

Gets the number of elements in the collection. (IStringCollection.get_Count)
get_Count

Gets the number of elements in the collection. (IUpdateCollection.get_Count)
get_Count

Gets the number of elements in the collection. (IUpdateDownloadContentCollection.get_Count)
get_Count

Gets the number of elements in the collection. (IUpdateExceptionCollection.get_Count)
get_Count

Gets the number of elements in the collection. (IUpdateHistoryEntryCollection.get_Count)
get_Count

Gets the number of elements in the collection. (IUpdateServiceCollection.get_Count)
get_Count

Gets the number of elements contained in the collection.
get_CurrentUpdateBytesDownloaded

Gets a string that specifies how much data has been transferred for the content file or files of the update that is being downloaded, in bytes.
get_CurrentUpdateBytesToDownload

Gets a string that estimates how much data should be transferred for the content file or files of the update that is being downloaded, in bytes.
get_CurrentUpdateDownloadPhase

Gets a DownloadPhase enumeration value that specifies the phase of the download that is currently in progress.
get_CurrentUpdatePercentComplete

Gets an estimate of the percentage of the current update that has been downloaded.
get_CurrentUpdatePercentComplete

Gets how far the installation or uninstallation process for the current update has progressed, as a percentage.
get_CveIDs

Gets a collection of common vulnerabilities and exposures (CVE) IDs that are associated with the update.
get_CveIDs

Contains a collection of the Common Vulnerabilities and Exposures (CVE) identifiers that are associated with an update.
get_Date

Gets the date and the time an update was applied.
get_Deadline

Gets the date by which the update must be installed.
get_DeltaCompressedContentAvailable

Gets a Boolean value that indicates whether delta-compressed content is available on a server for the update.
get_DeltaCompressedContentPreferred

Gets a Boolean value that indicates whether to prefer delta-compressed content during the download and install or uninstall of the update if delta-compressed content is available.
get_DeploymentAction

Gets the action for which the update is deployed.
get_Description

Gets the description of the category.
get_Description

Gets the localized description of the update.
get_Description

Gets the description of an update.
get_DeviceProblemNumber

Gets the problem number of the matching device for the Windows driver update. (IWindowsDriverUpdate.get_DeviceProblemNumber)
get_DeviceProblemNumber

Gets the problem number of the matching device for the Windows driver update. (IWindowsDriverUpdateEntry.get_DeviceProblemNumber)
get_DeviceStatus

Gets the status of the matching device for the Windows driver update. (IWindowsDriverUpdate.get_DeviceStatus)
get_DeviceStatus

Gets the status of the matching device for the Windows driver update. (IWindowsDriverUpdateEntry.get_DeviceStatus)
get_DownloadContents

Gets file information about the download contents of the update.
get_DownloadPriority

Gets the suggested download priority of the update.
get_DownloadUrl

Gets the location of the download content on the server that hosts the update.
get_DriverClass

Gets the class of the Windows driver update.
get_DriverClass

Retrieves the class of the Windows driver update.
get_DriverHardwareID

Gets the hardware ID or compatible ID that the Windows driver update must match to be installable.
get_DriverHardwareID

Gets the hardware or the compatible identifier that the Windows driver update must match to be installable.
get_DriverManufacturer

Gets the language-invariant name of the manufacturer of the Windows driver update. (IWindowsDriverUpdate.get_DriverManufacturer)
get_DriverManufacturer

Gets the language-invariant name of the manufacturer of the Windows driver update. (IWindowsDriverUpdateEntry.get_DriverManufacturer)
get_DriverModel

Gets the language-invariant model name of the device for which the Windows driver update is intended. (IWindowsDriverUpdate.get_DriverModel)
get_DriverModel

Gets the language-invariant model name of the device for which the Windows driver update is intended. (IWindowsDriverUpdateEntry.get_DriverModel)
get_DriverProvider

Gets the language-invariant name of the provider of the Windows driver update. (IWindowsDriverUpdate.get_DriverProvider)
get_DriverProvider

Gets the language-invariant name of the provider of the Windows driver update. (IWindowsDriverUpdateEntry.get_DriverProvider)
get_DriverVerDate

Gets the driver version date of the Windows driver update. (IWindowsDriverUpdate.get_DriverVerDate)
get_DriverVerDate

Gets the driver version date of the Windows driver update. (IWindowsDriverUpdateEntry.get_DriverVerDate)
get_EulaAccepted

Gets a Boolean value that indicates whether the Microsoft Software License Terms that are associated with the update are accepted for the computer.
get_EulaText

Gets the full localized text of the Microsoft Software License Terms that are associated with the update.
get_ExpirationDate

Gets the date on which the authorization cabinet file expires.
get_ExtendedStaticProperty

Gets the value for the extended property being queried.
get_FeaturedUpdatesEnabled

Not supported. (IAutomaticUpdatesSettings3.get_FeaturedUpdatesEnabled)
get_ForceQuiet

Gets and sets a Boolean value that indicates whether Windows Installer is forced to install the updates without user interaction. (Get)
get_HandlerID

Gets the install handler of the update.
get_Height

Gets the height of the image, in pixels.
get_HResult

Gets the exception code number if an exception code number is raised during the download.
get_HResult

Gets the HRESULT of the exception, if any, that is raised during the installation.
get_HResult

Gets the exception HRESULT value, if any, that is raised during the operation on the update.
get_HResult

Gets the Windows-based HRESULT code for the search results.
get_HResult

Gets the HRESULT value that is returned from the operation on an update.
get_HResult

Gets the HRESULT exception value that is raised during the operation on an update.
get_Identity

Gets an interface that contains the unique identifier of the update.
get_IgnoreDownloadPriority

Gets and sets a Boolean value that indicates whether to ignore the download priority. (Get)
get_Image

Gets an interface that contains information about the image that is associated with the category.
get_Image

Gets an interface that contains information about an image that is associated with the update.
get_Impact

Gets an InstallationImpact enumeration that indicates how the installation or uninstallation of the update affects the computer.
get_IncludePotentiallySupersededUpdates

Gets and sets a Boolean value that indicates whether the search results include updates that are superseded by other updates in the search results. (Get)
get_IncludeRecommendedUpdates

Gets and sets a Boolean value that indicates whether to include optional or recommended updates when a search for updates and installation of updates is performed. (Get)
get_InstallationBehavior

Gets an interface that contains the installation options of the update.
get_IsBeta

Gets a Boolean value that indicates whether the update is a beta release.
get_IsBusy

Gets a Boolean value that indicates whether an installation or uninstallation is in progress on a computer at a specific time.
get_IsCompleted

Gets the setting that indicates whether the call to IUpdateDownloader.BeginDownload was processed completely.
get_IsCompleted

Gets a value that indicates whether a call to the IUpdateInstaller.BeginInstall or IUpdateInstaller.BeginUninstall method is completely processed.
get_IsCompleted

Gets a Boolean value that indicates whether the call to the IUpdateSearch.BeginSearch method is completely processed.
get_IsDefaultAUService

Gets a Boolean value that indicates whether the service is registered with Automatic Updates and whether the service is currently used by Automatic Updates as the default service.
get_IsDeltaCompressedContent

Gets a Boolean value that indicates whether an update is a binary update or a full-file update.
get_IsDownloaded

Gets a Boolean value that indicates whether all the update content is cached on the computer.
get_IsForced

Gets and sets a Boolean value that indicates whether the Windows Update Agent (WUA) forces the download of updates that are already installed or that cannot be installed. (Get)
get_IsForced

Gets or sets a Boolean value that indicates whether to forcibly install or uninstall an update. (Get)
get_IsHidden

Gets a Boolean value that indicates whether an update is hidden by a user. (Get)
get_IsInstalled

Gets a Boolean value that indicates whether the update is installed on a computer when the search is performed.
get_IsManaged

Gets a Boolean value that indicates whether a service is a managed service.
get_IsMandatory

Gets a Boolean value that indicates whether the installation of the update is mandatory.
get_IsPendingRegistrationWithAU

Gets a Boolean value that indicates whether the service will also be registered with Automatic Updates, when added.
get_IsPresent

Gets a Boolean value that indicates whether an update is present on a computer.
get_IsPresent

Gets a Boolean value that indicates whether an update is installed on a computer.
get_IsRegisteredWithAU

Gets a Boolean value that indicates whether a service is registered with Automatic Updates.
get_IsScanPackageService

Gets a Boolean value that indicates whether a service is based on a scan package.
get_IssueDate

Gets the date on which the authorization cabinet file was issued.
get_IsUninstallable

Gets a Boolean value that indicates whether a user can uninstall the update from a computer.
get_Item

Gets an ICategory interface from the collection.
get_Item

Gets or sets a string in the collection. (Get)
get_Item

Gets or sets an IUpdate interface in a collection. (Get)
get_Item

Gets the download content for an update from an IUpdateDownloadContentCollection interface.
get_Item

Gets an IUpdateException interface in the collection.
get_Item

Gets an IUpdateHistoryEntry interface in the collection.
get_Item

Gets and sets an IUpdateService interface in a collection.
get_Item

Gets an IWindowsDriverUpdateEntry interface in the collection.
get_KBArticleIDs

Gets a collection of Microsoft Knowledge Base article IDs that are associated with the update.
get_Languages

Gets an interface that contains the languages that are supported by the update.
get_LastDeploymentChangeTime

Gets the last published date of the update, in Coordinated Universal Time (UTC) date and time, on the server that deploys the update.
get_LastInstallationSuccessDate

Gets the last time and Coordinated Universal Time (UTC) date when Automatic Updates successfully installed any updates, even if some failures occurred.
get_LastSearchSuccessDate

Gets the last time and Coordinated Universal Time (UTC) date when AutomaticUpdates successfully searched for updates.
get_MaxDownloadSize

Gets the maximum download size of the update.
get_Message

Gets a message that describes the search results.
get_MinDownloadSize

Gets the minimum download size of the update.
get_MoreInfoUrls

Gets a collection of language-specific strings that specify the hyperlinks to more information about the update.
get_MsrcSeverity

Gets the Microsoft Security Response Center severity rating of the update.
get_Name

Gets the localized name of the category.
get_Name

Gets the name of the service.
get_NonAdministratorsElevated

Gets and sets a Boolean value that indicates whether non-administrators can perform some update-related actions without administrator approval. (Get)
get_NotificationLevel

Gets and sets how users are notified about Automatic Update events. (Get)
get_OemHardwareSupportLink

Gets a hyperlink to technical support information for OEM hardware.
get_OffersWindowsUpdates

Gets a Boolean value indicates whether the current service offers updates from Windows Updates.
get_Online

Gets and sets a Boolean value that indicates whether the UpdateSearcher goes online to search for updates. (Get)
get_Operation

Gets an UpdateOperation value that specifies the operation on an update.
get_Order

Gets the recommended display order of this category among its sibling categories.
get_Parent

Gets an interface that describes the parent category of this category.
get_ParentHwnd

Gets and sets a handle to the parent window that can contain a dialog box. (Get)
get_ParentWindow

Gets and sets the interface that represents the parent window that can contain a dialog box. (Get)
get_PercentComplete

Gets an estimate of the percentage of all the updates that have been downloaded.
get_PercentComplete

Gets how far the overall installation or uninstallation process has progressed, as a percentage.
get_PerUser

Gets a Boolean value that indicates whether this is a per-user update.
get_PerUser

Gets a Boolean value that indicates whether an update is a per-user update.
get_Priority

Gets and sets the priority level of the download. (Get)
get_Product

Gets the language-invariant name of the product.
get_Progress

Gets an interface that contains the progress of the asynchronous download at the time that the callback was made.
get_Progress

Gets an interface that contains the progress of the asynchronous installation or uninstallation at the time the callback was made.
get_ReadOnly

Gets a Boolean value that indicates whether the Automatic Update settings are read-only.
get_ReadOnly

Gets a Boolean value that indicates whether the collection is read-only.
get_ReadOnly

Gets a Boolean value that indicates whether the update collection is read-only.
get_ReadOnly

Gets a Boolean value that indicates whether the session object is read-only.
get_ReadOnly

Gets a Boolean value that indicates whether the WebProxy object is read-only.
get_RebootBehavior

Gets an InstallationRebootBehavior enumeration that specifies the restart behavior that occurs when you install or uninstall the update.
get_RebootRequired

Gets a Boolean value that indicates whether you must restart the computer to complete the installation or uninstallation of an update.
get_RebootRequired

Gets a Boolean value that indicates whether a system restart is required to complete the installation or uninstallation of one or more updates.
get_RebootRequired

Gets a Boolean value that indicates whether a system restart is required on a computer to complete the installation or the uninstallation of an update.
get_RebootRequired

Gets a Boolean value that indicates whether a system restart is required on a computer to complete the installation of an update.
get_RebootRequired

Gets a Boolean value that indicates whether the computer must be restarted after you install or uninstall an update.
get_RebootRequiredBeforeInstallation

Gets a Boolean value that indicates whether a system restart is required before installing or uninstalling updates.
get_RecommendedCpuSpeed

Gets the recommended CPU speed used to install the update, in megahertz (MHz).
get_RecommendedHardDiskSpace

Gets the recommended free space that should be available on the hard disk before you install the update. The free space is specified in megabytes (MB).
get_RecommendedMemory

Gets the recommended physical memory size that should be available in your computer before you install the update. The physical memory size is specified in megabytes (MB).
get_RedirectUrls

Contains the URLs for the redirector cabinet file.
get_RegistrationState

Gets an UpdateServiceRegistrationState value that indicates the current state of the service registration.
get_ReleaseNotes

Gets the localized release notes for the update.
get_Required

Gets a Boolean value that indicates whether Group Policy requires the Automatic Updates service.
get_RequiresNetworkConnectivity

Gets a Boolean value that indicates whether the installation or uninstallation of an update requires network connectivity.
get_ResultCode

Gets an OperationResultCodeenumeration that specifies the result of the download.
get_ResultCode

Gets an OperationResultCode value that specifies the result of an operation on an update. (IInstallationResult.get_ResultCode)
get_ResultCode

Gets an OperationResultCode enumeration that specifies the result of a search.
get_ResultCode

Gets an OperationResultCode enumeration value that specifies the result of an operation on the update.
get_ResultCode

Gets an OperationResultCode value that specifies the result of an operation on an update. (IUpdateHistoryEntry.get_ResultCode)
get_ResultCode

Gets an OperationResultCode value that specifies the result of an operation on an update. (IUpdateInstallationResult.get_ResultCode)
get_Results

Returns a pointer to an IAutomaticUpdatesResults interface.
get_RevisionNumber

Gets the revision number of an update.
get_RootCategories

Gets an interface collection of the root categories that are currently available on the computer.
get_ScheduledInstallationDay

Gets and sets the days of the week on which Automatic Updates installs or uninstalls updates. (Get)
get_ScheduledInstallationTime

Gets and sets the time at which Automatic Updates installs or uninstalls updates. (Get)
get_SecurityBulletinIDs

Gets a collection of string values that contain the security bulletin IDs that are associated with the update.
get_ServerSelection

Gets the ServerSelection value that indicates which server provided an update.
get_ServerSelection

Gets and sets a ServerSelection value that indicates the server to search for updates. (Get)
get_Service

Gets a pointer to an IUpdateService2 interface. This property is the default property.
get_ServiceEnabled

Gets a Boolean value that indicates whether all the components that Automatic Updates requires are available.
get_ServiceID

Gets the service identifier of an update service that is not a Windows update.
get_ServiceID

Gets and sets a site to search when the site to search is not a Windows Update site. (Get)
get_ServiceID

Retrieves or sets the identifier for a service.
get_Services

Gets an IUpdateServiceCollection of the services that are registered with WUA.
get_ServiceUrl

Retrieves the URL for the service.
get_Settings

Gets the configuration settings for Automatic Updates.
get_SetupPrefix

Identifies the prefix for the setup files.
get_Source

Gets the source location of the image.
get_SupersededUpdateIDs

Gets a collection of update identifiers. This collection of identifiers specifies the updates that are superseded by the update.
get_SupportUrl

Gets a hyperlink to the language-specific support information for the update.
get_SupportUrl

Gets a hyperlink to the language-specific support information for an update.
get_Title

Gets the localized title of the update.
get_Title

Gets the title of an update.
get_TotalBytesDownloaded

Gets a string that specifies the total amount of data that has been downloaded, in bytes.
get_TotalBytesToDownload

Gets a string that represents the estimate of the total amount of data that will be downloaded, in bytes.
get_Type

Gets the type of the category.
get_Type

Gets the type of the update.
get_UninstallationBehavior

Gets an interface that contains the uninstallation options for the update.
get_UninstallationNotes

Gets the uninstallation notes for the update.
get_UninstallationNotes

Gets the uninstallation notes of an update.
get_UninstallationSteps

Gets an interface that contains the uninstallation steps for the update.
get_UninstallationSteps

Gets the IStringCollection interface that contains the uninstallation steps for an update.
get_UnmappedResultCode

Gets the unmapped result code that is returned from an operation on an update.
get_UpdateID

Gets the revision-independent identifier of an update.
get_UpdateIdentity

Gets the IUpdateIdentity interface that contains the identity of the update.
get_Updates

Gets an interface that contains a collection of updates that immediately belong to the category.
get_Updates

Gets an interface that contains a read-only collection of the updates that are specified in a download.
get_Updates

Gets an interface that contains a read-only collection of the updates that are specified in the installation or uninstallation.
get_Updates

Gets an interface collection of the updates that result from a search.
get_Updates

Gets and sets an interface that contains a read-only collection of the updates that are specified for download. (Get)
get_Updates

Gets and sets an interface that contains a read-only collection of the updates that are specified for installation or uninstallation. (Get)
get_UserLocale

Gets and sets the preferred locale for which update information is retrieved.. (Get)
get_UserName

Gets and sets the user name to submit to the proxy server for authentication. (Get)
get_Warnings

Gets a collection of the warnings that result from a search.
get_WebProxy

Gets and sets the proxy settings that are used to access the server. (Get)
get_Width

Gets the width of the image, in pixels.
get_WindowsDriverUpdateEntries

Gets the driver update entries that are applicable for the update.
GetInfo

Retrieves version information about Windows Update Agent (WUA).
GetProgress

Returns an IDownloadProgress interface that describes the current progress of a download.
GetProgress

Returns an IInstallationProgress interface that describes the current progress of an installation or uninstallation.
GetTotalHistoryCount

Returns the number of update events on the computer.
GetUpdateResult

Returns the result of the download of a specified update.
GetUpdateResult

Returns an IUpdateDownloadResult interface that contains the download information for a specified update.
GetUpdateResult

Returns the result of the installation or uninstallation of a specified update.
GetUpdateResult

Returns an IUpdateInstallationResult interface that contains the installation results for a specified update.
Insert

Inserts an item into the collection at the specified position. (IStringCollection.Insert)
Insert

Inserts an item into the collection at the specified position. (IUpdateCollection.Insert)
Install

Starts a synchronous installation of the updates.
Invoke

Notifies the caller that the download is complete.
Invoke

Handles the notification of a change in the progress of an asynchronous download that was initiated by calling the IUpdateDownloader.BeginDownload method.
Invoke

Handles the notification of the completion of an asynchronous installation or uninstallation that is initiated by a call to IUpdateInstaller.BeginInstall or IUpdateInstaller.BeginUninstall.
Invoke

Handles the notification of the change in the progress of an asynchronous installation or uninstallation that was initiated by a call to the IUpdateInstaller.BeginInstall method or the IUpdateInstaller.BeginUninstall method.
Invoke

Handles the notification of the completion of an asynchronous search that is initiated by calling the IUpdateSearcher.BeginSearch method.
LockDown

Restricts access to the methods and properties of the object that implements this method.
Pause

Pauses automatic updates.
PromptForCredentials

Prompts the user for the password to use for proxy authentication.
PromptForCredentialsFromHwnd

Prompts the user for a password to use for proxy authentication using the hWnd property of the parent window.
put_Address

Gets and sets the address and the decimal port number of the proxy server. (Put)
put_AllowSourcePrompts

Gets and sets a Boolean value that indicates whether to show source prompts to the user when installing the updates. (Put)
put_AttemptCloseAppsIfNecessary

Sets a value indicating whether the update installer will attempt to close applications, blocking immediate installation of updates.
put_AutoDetect

Gets and sets a Boolean value that indicates whether IWebProxy automatically detects proxy settings. (Put)
put_BypassList

Gets and sets a collection of addresses that do not use the proxy server. (Put)
put_BypassProxyOnLocal

Gets and sets a Boolean value that indicates whether local addresses bypass the proxy server. (Put)
put_CanAutomaticallyUpgradeService

Gets and sets a Boolean value that indicates whether future calls to the BeginSearch and Search methods result in an automatic upgrade to Windows Update Agent (WUA). (Put)
put_ClientApplicationID

Gets and sets the current client application. (IUpdateDownloader.put_ClientApplicationID)
put_ClientApplicationID

Gets and sets the current client application. (IUpdateInstaller.put_ClientApplicationID)
put_ClientApplicationID

Identifies the current client application. (Put)
put_ClientApplicationID

Gets and sets the identifier of the current client application. (Put)
put_ClientApplicationID

Gets and sets the current client application. (IUpdateSession.put_ClientApplicationID)
put_FeaturedUpdatesEnabled

Not supported. (IAutomaticUpdatesSettings3.put_FeaturedUpdatesEnabled)
put_ForceQuiet

Gets and sets a Boolean value that indicates whether Windows Installer is forced to install the updates without user interaction. (Put)
put_IgnoreDownloadPriority

Gets and sets a Boolean value that indicates whether to ignore the download priority. (Put)
put_IncludePotentiallySupersededUpdates

Gets and sets a Boolean value that indicates whether the search results include updates that are superseded by other updates in the search results. (Put)
put_IncludeRecommendedUpdates

Gets and sets a Boolean value that indicates whether to include optional or recommended updates when a search for updates and installation of updates is performed. (Put)
put_IsForced

Gets and sets a Boolean value that indicates whether the Windows Update Agent (WUA) forces the download of updates that are already installed or that cannot be installed. (Put)
put_IsForced

Gets or sets a Boolean value that indicates whether to forcibly install or uninstall an update. (Put)
put_IsHidden

Gets a Boolean value that indicates whether an update is hidden by a user. (Put)
put_Item

Gets or sets a string in the collection. (Put)
put_Item

Gets or sets an IUpdate interface in a collection. (Put)
put_NonAdministratorsElevated

Gets and sets a Boolean value that indicates whether non-administrators can perform some update-related actions without administrator approval. (Put)
put_NotificationLevel

Gets and sets how users are notified about Automatic Update events. (Put)
put_Online

Gets and sets a Boolean value that indicates whether the UpdateSearcher goes online to search for updates. (Put)
put_ParentHwnd

Gets and sets a handle to the parent window that can contain a dialog box. (Put)
put_ParentWindow

Gets and sets the interface that represents the parent window that can contain a dialog box. (Put)
put_Priority

Gets and sets the priority level of the download. (Put)
put_ScheduledInstallationDay

Gets and sets the days of the week on which Automatic Updates installs or uninstalls updates. (Put)
put_ScheduledInstallationTime

Gets and sets the time at which Automatic Updates installs or uninstalls updates. (Put)
put_ServerSelection

Gets and sets a ServerSelection value that indicates the server to search for updates. (Put)
put_ServiceID

Gets and sets a site to search when the site to search is not a Windows Update site. (Put)
put_Updates

Gets and sets an interface that contains a read-only collection of the updates that are specified for download. (Put)
put_Updates

Gets and sets an interface that contains a read-only collection of the updates that are specified for installation or uninstallation. (Put)
put_UserLocale

Gets and sets the preferred locale for which update information is retrieved.. (Put)
put_UserName

Gets and sets the user name to submit to the proxy server for authentication. (Put)
put_WebProxy

Gets and sets the proxy settings that are used to access the server. (Put)
QueryHistory

Synchronously queries the computer for the history of the update events.
QueryHistory

Synchronously queries the computer for the history of update events.
QueryServiceRegistration

Returns a pointer to an IUpdateServiceRegistration interface.
RecordInstallationResult

Records the result for an update. The result is specified by an IStringCollection object.
Refresh

Retrieves the latest Automatic Updates settings.
RegisterServiceWithAU

Registers a service with Automatic Updates.
RemoveAt

Removes the item at the specified index from the collection. (IStringCollection.RemoveAt)
RemoveAt

Removes the item at the specified index from the collection. (IUpdateCollection.RemoveAt)
RemoveService

Removes a service registration from Windows Update Agent (WUA).
RequestAbort

Makes a request to end an asynchronous download.
RequestAbort

Makes a request to cancel the installation or uninstallation.
RequestAbort

Makes a request to cancel the asynchronous search.
Resume

Restarts automatic updating if automatic updating is paused.
RunWizard

Starts a wizard that guides the local user through the steps to install the updates.
Save

Applies the current Automatic Updates settings.
Search

Performs a synchronous search for updates. The search uses the search options that are currently configured.
SetOption

Set options for the object that specifies the service ID. The SetOption method is also used to determine whether a warning is displayed when you change the registration of Automatic Updates.
SetPassword

Sets the password to submit to the proxy server for authentication.
ShowSettingsDialog

Displays a dialog box that contains settings for Automatic Updates.
Uninstall

Starts a synchronous uninstallation of the updates.
UnregisterServiceWithAU

Unregisters a service with Automatic Updates.

Interfaces

 
IAutomaticUpdates

Contains the functionality of Automatic Updates. (IAutomaticUpdates)
IAutomaticUpdates2

Contains the functionality of Automatic Updates. (IAutomaticUpdates2)
IAutomaticUpdatesResults

Contains the read-only properties that describe Automatic Updates.
IAutomaticUpdatesSettings

Contains the settings that are available in Automatic Updates. (IAutomaticUpdatesSettings)
IAutomaticUpdatesSettings2

Contains the settings that are available in Automatic Updates. (IAutomaticUpdatesSettings2)
IAutomaticUpdatesSettings3

Contains the settings that are available in Automatic Updates. (IAutomaticUpdatesSettings3)
ICategory

Represents the category to which an update belongs.
ICategoryCollection

Represents an ordered read-only list of ICategory interfaces.
IDownloadCompletedCallback

Provides the callback that is used when an asynchronous download is completed.
IDownloadCompletedCallbackArgs

Contains information about the completion of a download. This interface acts as a parameter to the IDownloadCompletedCallback delegate. The download and installation of the update is asynchronous.
IDownloadJob

Contains properties and methods that are available to a download operation.
IDownloadProgress

Represents the progress of an asynchronous download operation.
IDownloadProgressChangedCallback

Handles the notification that indicates a change in the progress of an asynchronous download operation.
IDownloadProgressChangedCallbackArgs

Contains information about the change in the progress of an asynchronous download operation.
IDownloadResult

Represents the result of a download operation.
IImageInformation

Contains information about a localized image that is associated with an update or a category.
IInstallationAgent

Records the result for an update.
IInstallationBehavior

Represents the installation and uninstallation options of an update.
IInstallationCompletedCallback

Handles the notification that indicates that an asynchronous installation or uninstallation is complete.
IInstallationCompletedCallbackArgs

Contains information about the completion of an installation and acts as a parameter to the IInstallationCompletedCallback delegate. The download and installation of the update is asynchronous.
IInstallationJob

Contains properties and methods that are available to an installation or uninstallation operation.
IInstallationProgress

Represents the progress of an asynchronous installation or uninstallation.
IInstallationProgressChangedCallback

Defines the Invoke method that handles the notification about the on-going progress of an asynchronous installation or uninstallation.
IInstallationProgressChangedCallbackArgs

Contains information about the change in the progress of an asynchronous installation or uninstallation at the time the callback was made.
IInstallationResult

Represents the result of an installation or uninstallation.
IInvalidProductLicenseException

Encapsulates the exception that is thrown when an invalid license is detected for a product.
ISearchCompletedCallback

Contains a method that handles the notification about the completion of an asynchronous search operation.
ISearchCompletedCallbackArgs

Contains information about the completion of an asynchronous search. It also acts as a parameter to the SearchCompletedCallback delegate.
ISearchJob

Contains properties and methods that are available to a search operation.
ISearchResult

Represents the result of a search.
IStringCollection

Represents an ordered list of strings.
ISystemInformation

Contains information about the specified computer. This information is relevant to the Windows Update Agent (WUA).
IUpdate

Contains the properties and methods that are available to an update. (IUpdate)
IUpdate2

Contains the properties and methods that are available to an update. (IUpdate2)
IUpdate3

Contains the properties and methods that are available to an update. (IUpdate3)
IUpdate4

Contains the properties and methods that are available to an update. (IUpdate4)
IUpdate5

Contains the properties and methods that are available to an update. (IUpdate5)
IUpdateCollection

Represents an ordered list of updates.
IUpdateDownloadContent

Represents the download content of an update. (IUpdateDownloadContent)
IUpdateDownloadContent2

Represents the download content of an update. (IUpdateDownloadContent2)
IUpdateDownloadContentCollection

Represents a collection of download contents for an update.
IUpdateDownloader

Downloads updates from the server.
IUpdateDownloaderEx

Downloads updates from the server. (IUpdateDownloaderEx)
IUpdateDownloadResult

Contains the properties that indicate the status of a download operation for an update.
IUpdateEx

Contains the properties and methods that are available to an update. (IUpdateEx)
IUpdateException

Represents info about the aspects of search results returned in the ISearchResult object that were incomplete.
IUpdateExceptionCollection

Represents an ordered read-only list of IUpdateException interfaces.
IUpdateHistoryEntry

Represents the recorded history of an update. (IUpdateHistoryEntry)
IUpdateHistoryEntry2

Represents the recorded history of an update. (IUpdateHistoryEntry2)
IUpdateHistoryEntryCollection

Represents an ordered read-only list of IUpdateHistoryEntry interfaces.
IUpdateIdentity

Represents the unique identifier of an update.
IUpdateInstallationResult

Contains the properties and the methods that are available to the status of an installation or uninstallation of an update.
IUpdateInstaller

Installs or uninstalls updates from or onto a computer.
IUpdateInstaller2

Installs or uninstalls updates on a computer. (IUpdateInstaller2)
IUpdateInstaller3

Installs or uninstalls updates on a computer. (IUpdateInstaller3)
IUpdateInstaller4

Provides methods to finalize updates that were previously staged or installed.
IUpdateLockdown

Restricts access to methods and properties of objects that implements the method of this interface.
IUpdateSearcher

Searches for updates on a server. (IUpdateSearcher)
IUpdateSearcher2

Searches for updates on a server. (IUpdateSearcher2)
IUpdateSearcher3

Searches for updates on a server. (IUpdateSearcher3)
IUpdateService

Contains information about a service that is registered with Windows Update Agent (WUA) or with Automatic Updates. (IUpdateService)
IUpdateService2

Contains information about a service that is registered with Windows Update Agent (WUA) or with Automatic Updates. (IUpdateService2)
IUpdateServiceCollection

Represents a list of IUpdateService interfaces.
IUpdateServiceManager

Adds or removes the registration of the update service with Windows Update Agent or Automatic Updates. (IUpdateServiceManager)
IUpdateServiceManager2

Adds or removes the registration of the update service with Windows Update Agent or Automatic Updates. (IUpdateServiceManager2)
IUpdateServiceRegistration

Contains information about the registration state of a service.
IUpdateSession

Represents a session in which the caller can perform operations that involve updates. For example, this interface represents sessions in which the caller performs a search, download, installation, or uninstallation operation. (IUpdateSession)
IUpdateSession2

Represents a session in which the caller can perform operations that involve updates. For example, this interface represents sessions in which the caller performs a search, download, installation, or uninstallation operation. (IUpdateSession2)
IUpdateSession3

Represents a session in which the caller can perform operations that involve updates. For example, this interface represents sessions in which the caller performs a search, download, installation, or uninstallation operation. (IUpdateSession3)
IWebProxy

Contains the HTTP proxy settings.
IWindowsDriverUpdate

Contains the properties and the methods that are available only from a Windows driver update.
IWindowsDriverUpdate2

Contains the properties and methods that are available only from a Windows driver update. (IWindowsDriverUpdate2)
IWindowsDriverUpdate3

Contains the properties and methods that are available only from a Windows driver update. (IWindowsDriverUpdate3)
IWindowsDriverUpdate4

Contains the properties and methods that are available only from a Windows driver update. (IWindowsDriverUpdate4)
IWindowsDriverUpdate5

Contains the properties and methods that are available only from a Windows driver update. (IWindowsDriverUpdate5)
IWindowsDriverUpdateEntry

Contains the properties that are available only from a Windows driver update.
IWindowsDriverUpdateEntryCollection

Contains a collection of driver update entries associated with a driver update. All of the properties have the standard collection semantics.
IWindowsUpdateAgentInfo

Retrieves information about the version of Windows Update Agent (WUA).