./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 don't configure this setting, archive files will be scanned.
If you disable this setting, archive files won't be scanned. However, archives are always scanned during directed scans.
Description framework properties:
Property name Property value Formatint 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 â Device./Device/Vendor/MSFT/Policy/Config/Defender/AllowBehaviorMonitoring
This policy setting allows you to configure behavior monitoring.
If you enable or don't 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 Formatint 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 â Device./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 won't 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'll join Microsoft MAPS with the membership specified.
If you disable or don't configure this setting, you won't 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 Formatint 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 ADMX File Name WindowsDefender.admx AllowEmailScanning Scope Editions Applicable OS â Device./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 isn't supported on modern email clients.
If you enable this setting, e-mail scanning will be enabled.
If you disable or don't configure this setting, e-mail scanning will be disabled.
Description framework properties:
Property name Property value Formatint 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 â Device./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 don't configure this setting, mapped network drives won't be scanned.
Description framework properties:
Property name Property value Formatint 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 â Device./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 don't configure this setting, removable drives won't 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 Formatint Access Type Add, Delete, Get, Replace Default Value 0
Allowed values:
Value Description 0 (Default) Not allowed. Turns off scanning on removable drives. 1 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 AllowIntrusionPreventionSystemNote
This policy is deprecated and may be removed in a future release.
Scope Editions Applicable OS â Device./Device/Vendor/MSFT/Policy/Config/Defender/AllowIntrusionPreventionSystem
Allows or disallows Windows Defender Intrusion Prevention functionality.
Description framework properties:
Property name Property value Formatint Access Type Add, Delete, Get, Replace Default Value 1
Allowed values:
Value Description 0 Not allowed. 1 (Default) Allowed. AllowIOAVProtection Scope Editions Applicable OS â Device./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 don't 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 Formatint 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 â Device./Device/Vendor/MSFT/Policy/Config/Defender/AllowOnAccessProtection
This policy setting allows you to configure monitoring for file and program activity.
If you enable or don't 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 Formatint 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 â Device./Device/Vendor/MSFT/Policy/Config/Defender/AllowRealtimeMonitoring
Allows or disallows Windows Defender Realtime Monitoring functionality.
Description framework properties:
Property name Property value Formatint 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 â Device./Device/Vendor/MSFT/Policy/Config/Defender/AllowScanningNetworkFiles
This policy setting allows you to configure scheduled scans and on-demand (manually initiated) scans for files that are accessed over the network. It's recommended to enable this setting.
Note
Real-time protection (on-access) scanning isn't impacted by this policy.
Description framework properties:
Property name Property value Formatint Access Type Add, Delete, Get, Replace Default Value 1
Allowed values:
Value Description 0 Not allowed. Turns off scanning of network files. 1 (Default) Allowed. Scans network files.Group policy mapping:
Name Value Name Scan_DisableScanningNetworkFiles Friendly Name Configure scanning of 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 â Device./Device/Vendor/MSFT/Policy/Config/Defender/AllowScriptScanning
Allows or disallows Windows Defender Script Scanning functionality.
Description framework properties:
Property name Property value Formatint Access Type Add, Delete, Get, Replace Default Value 1
Allowed values:
Value Description 0 Not allowed. 1 (Default) Allowed. AllowUserUIAccess Scope Editions Applicable OS â Device./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 Formatint 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 â Device./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:
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 Formatchr (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 ADMX File Name WindowsDefender.admx AttackSurfaceReductionRules Scope Editions Applicable OS â Device./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:
Unless the ASR rule is disabled, a subsample of audit events are collected for ASR rules with 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:
The following status IDs are permitted under the value column:
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 Formatchr (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 ADMX File Name WindowsDefender.admx AvgCPULoadFactor Scope Editions Applicable OS â Device./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 won't exceed the percentage specified.
If you disable or don't configure this setting, CPU utilization won't exceed the default value.
Note
If you enable both of the following policies, then Windows ignores the value of AvgCPULoadFactor:
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx CheckForSignaturesBeforeRunningScan Scope Editions Applicable OS â Device./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 don't configure this setting, the scan will start using the existing security intelligence.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx CloudBlockLevel Scope Editions Applicable OS â Device./Device/Vendor/MSFT/Policy/Config/Defender/CloudBlockLevel
This policy setting determines how aggressive Microsoft Defender Antivirus will be in blocking and scanning suspicious files.
If this setting is on, Microsoft 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 Microsoft Defender Antivirus documentation site.
Note
This feature requires the "Join Microsoft MAPS" setting enabled in order to function.
Possible options are:
(0x0) Default Microsoft Defender Antivirus blocking level (0x1) Moderate Microsoft Defender Antivirus blocking level, delivers verdict only for high confidence detections (0x2) High blocking level - aggressively block unknowns while optimizing client performance (greater chance of false positives) (0x4) High+ blocking level - aggressively block unknowns and apply additional protection measures (may impact client performance) (0x6) Zero tolerance blocking level - block all unknown executables.
Description framework properties:
Property name Property value Formatint 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 MpEngine_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 ADMX File Name WindowsDefender.admx CloudExtendedTimeout Scope Editions Applicable OS â Device./Device/Vendor/MSFT/Policy/Config/Defender/CloudExtendedTimeout
This feature allows Microsoft Defender Antivirus to block a suspicious file for up to 60 seconds, and scan it in the cloud to make sure it's safe.
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.
Note
This feature depends on three other MAPS settings - "Configure the 'Block at First Sight' feature; "Join Microsoft MAPS"; "Send file samples when further analysis is required" all need to be enabled.
Description framework properties:
Property name Property value Formatint Access Type Add, Delete, Get, Replace Allowed Values Range: [0-50] Default Value 0
Group policy mapping:
Name Value Name MpEngine_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 ADMX File Name WindowsDefender.admx ControlledFolderAccessAllowedApplications Scope Editions Applicable OS â Device./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 Formatchr (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 ADMX File Name WindowsDefender.admx ControlledFolderAccessProtectedFolders Scope Editions Applicable OS â Device./Device/Vendor/MSFT/Policy/Config/Defender/ControlledFolderAccessProtectedFolders
Specify additional folders that should be guarded by the Controlled folder access feature.
Files in these folders can't 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 Formatchr (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 ADMX File Name WindowsDefender.admx DaysToRetainCleanedMalware Scope Editions Applicable OS â Device./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 don't configure this setting, items will be kept in the quarantine folder indefinitely and won't be automatically removed.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx DisableCatchupFullScan Scope Editions Applicable OS â Device./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's 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 disable or don't configure 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 the computer powers on or resumes from sleep or hibernation. If there is no scheduled scan configured, there will be no catch-up scan run.
If you enable this setting, catch-up scans for scheduled full scans will be disabled.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx DisableCatchupQuickScan Scope Editions Applicable OS â Device./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's 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 disable or don't configure 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 the computer powers on or resumes from sleep or hibernation. If there's no scheduled scan configured, there will be no catch-up scan run.
If you enable this setting, catch-up scans for scheduled quick scans will be disabled.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx EnableControlledFolderAccess Scope Editions Applicable OS â Device./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:
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:
The Windows event log will record these blocks under Applications and Services Logs > Microsoft > Windows > Windows Defender > Operational > ID 1123.
Disabled:
The following won't be blocked and will be allowed to run:
These attempts won't be recorded in the Windows event log.
Audit Mode:
The following won't be blocked and will be allowed to run:
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:
The Windows event log will record these attempts under Applications and Services Logs > Microsoft > Windows > Windows Defender > Operational > ID 1123.
The following won't be blocked and will be allowed to run:
These attempts won't be recorded in the Windows event log.
Audit disk modification only:
The following won't be blocked and will be allowed to run:
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 won't be recorded.
Not configured:
Same as Disabled.
Description framework properties:
Property name Property value Formatint Access Type Add, Delete, Get, Replace Default Value 0
Allowed values:
Value Description 0 (Default) Disabled. 1 Enabled. 2 Audit Mode. 3 Block disk modification only. 4 Audit disk modification only.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 ADMX File Name WindowsDefender.admx EnableLowCPUPriority Scope Editions Applicable OS â Device./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 don't configure this setting, not changes will be made to CPU priority for scheduled scans.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx EnableNetworkProtection Scope Editions Applicable OS â Device./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 won't be able to access dangerous domains -Audit Mode: Users and applications can connect to dangerous domains, however if this feature would've blocked access if it were set to Block, then a record of the event will be in the event logs.
Disabled:
Users and applications won't be blocked from connecting to dangerous domains.
Not configured:
Same as Disabled.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx ExcludedExtensions Scope Editions Applicable OS â Device./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.
Note
To prevent unauthorized changes to exclusions, apply tamper protection. Tamper protection for exclusions only works when certain conditions are met.
Description framework properties:
Property name Property value Formatchr (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 ADMX File Name WindowsDefender.admx ExcludedPaths Scope Editions Applicable OS â Device./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.
Note
To prevent unauthorized changes to exclusions, apply tamper protection. Tamper protection for exclusions only works when certain conditions are met.
Description framework properties:
Property name Property value Formatchr (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 ADMX File Name WindowsDefender.admx ExcludedProcesses Scope Editions Applicable OS â Device./Device/Vendor/MSFT/Policy/Config/Defender/ExcludedProcesses
Allows an administrator to specify a list of files opened by processes to ignore during a scan.
Important
The process itself isn't 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.
Note
To prevent unauthorized changes to exclusions, apply tamper protection. Tamper protection for exclusions only works when certain conditions are met.
Description framework properties:
Property name Property value Formatchr (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 ADMX File Name WindowsDefender.admx PUAProtection Scope Editions Applicable OS â Device./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 won't be blocked, however if this feature would've blocked access if it were set to Block, then a record of the event will be in the event logs.
Disabled:
Potentially unwanted software won't be blocked.
Not configured:
Same as Disabled.
Description framework properties:
Property name Property value Formatint Access Type Add, Delete, Get, Replace Default Value 0
Allowed values:
Value Description 0 (Default) PUA Protection off. Windows Defender won't 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've 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 ADMX File Name WindowsDefender.admx RealTimeScanDirection Scope Editions Applicable OS â Device./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's 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 doesn't exist, resolves to the default (0).
If you enable this setting, the specified type of monitoring will be enabled.
If you disable or don't configure this setting, monitoring for incoming and outgoing files will be enabled.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx ScanParameter Scope Editions Applicable OS â Device./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 don't configure this setting, the default scan type will be used.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx ScheduleQuickScanTime Scope Editions Applicable OS â Device./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 don't configure this setting, daily quick scan controlled by this config won't be run.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx ScheduleScanDay Scope Editions Applicable OS â Device./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 don't configure this setting, a scheduled scan will run at a default frequency.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx ScheduleScanTime Scope Editions Applicable OS â Device./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 don't configure this setting, a scheduled scan will run at a default time.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx SecurityIntelligenceLocation Scope Editions Applicable OS â Device./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 don't configure this setting, security intelligence will be referred from the default local source.
Description framework properties:
Property name Property value Formatchr (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 â Device./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 won't be contacted.
If you disable or don't configure this setting, security intelligence update sources will be contacted in a default order.
Description framework properties:
Property name Property value Formatchr (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 Scope Editions Applicable OS â Device./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 won't be contacted.
If you disable or don't configure this setting, the list will remain empty by default and no sources will be contacted.
Description framework properties:
Property name Property value Formatchr (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 â Device./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 don't configure this setting, checks for security intelligence updates will occur at the default interval.
Description framework properties:
Property name Property value Formatint 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 ADMX File Name WindowsDefender.admx SubmitSamplesConsent Scope Editions Applicable OS â Device./Device/Vendor/MSFT/Policy/Config/Defender/SubmitSamplesConsent
This policy setting configures behavior 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 Formatint 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 ADMX File Name WindowsDefender.admx ThreatSeverityDefaultAction Scope Editions Applicable OS â Device./Device/Vendor/MSFT/Policy/Config/Defender/ThreatSeverityDefaultAction
This policy setting allows you to customize which automatic remediation action will be taken for each threat alert level. Threat alert levels should be added under the Options for this setting. Each entry must be listed as a name value pair. The name defines a threat alert level. The value contains the action ID for the remediation action that should be taken.
Valid threat alert levels are:
1 = Low 2 = Medium 4 = High 5 = Severe.
Valid remediation action values are:
2 = Quarantine 3 = Remove 6 = Ignore.
Description framework properties:
Property name Property value Formatchr (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 shouldn't be taken when detected. Location Computer Configuration Path Windows Components > Microsoft Defender Antivirus > Threats Registry Key Name Software\Policies\Microsoft\Windows Defender\Threats ADMX File Name WindowsDefender.admx Related articlesPolicy configuration service provider
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