Open the Extension Exclusions setting for editing and add your exclusions. If you are specifying a file, ensure that you enter a fully qualified path to the file, including the drive letter, folder path, file name, and extension.Specify each folder on its own line under the Value name column.Under the Options section, select Show.Open the Path Exclusions setting for editing, and add your exclusions. In the Group Policy Management Editor go to Computer configuration, and select Administrative templates.Įxpand the tree to Windows components > Microsoft Defender Antivirus > Exclusions. On your Group Policy management computer, open the Group Policy Management Console, right-click the Group Policy Object you want to configure, and then select Edit. If a folder is defined in the exclusion, then all files and sub-directories under that folder are excluded. If you specify a fully qualified path to a file, then only that file is excluded. Use Group Policy to configure folder or file extension exclusions See How to create and deploy antimalware policies: Exclusion settings for details on configuring Microsoft Configuration Manager (current branch). Use Configuration Manager to configure file name, folder, or file extension exclusions Microsoft Defender Antivirus device restriction settings for Windows 10 in Intune.Configure device restriction settings in Microsoft Intune.Use Intune to configure file name, folder, or file extension exclusions You can choose from several methods to define exclusions for Microsoft Defender Antivirus. To allow local changes to override managed deployment settings, configure how locally and globally defined exclusions lists are merged.Ĭonfigure the list of exclusions based on folder name or file extension In addition, exclusion list changes made with Group Policy are visible in the Windows Security app. The Group Policy lists take precedence when there are conflicts. To define exclusions across Defender for Endpoint, use custom indicators.īy default, local changes made to the lists (by users with administrator privileges, including changes made with PowerShell and WMI) will be merged with the lists as defined (and deployed) by Group Policy, Configuration Manager, or Intune. Restart the service by restarting Windows for new reparse points to be recognized as a valid exclusion target.Įxclusions apply to scheduled scans, on-demand scans, and real-time protection, but not across all Defender for Endpoint capabilities. Specify the actual network path.įolders that are reparse points are created after the Microsoft Defender Antivirus service starts, and those that have been added to the exclusion list will not be included. See the Use wildcards in the file name and folder path or extension exclusion lists section for important information about how wildcards work.ĭon't exclude mapped network drives. Using wildcards such as the asterisk (*) will alter how the exclusion rules are interpreted. Important notes about exclusions based on file extensions and folder locations File extensions apply to any file name with the defined extension if a path or folder is not defined.Reparse point subfolders must be excluded separately. Folder exclusions apply to all files and folders under that folder, unless the subfolder is a reparse point.ExclusionĪll files with the specified extension, anywhere on the machine.Īll files under the c:\test\sample folder The following table lists some examples of exclusions based on file extension and folder location. These exclusions are not visible in the Windows Security app and in PowerShell. Microsoft Defender Antivirus includes many automatic exclusions based on known operating system behaviors and typical management files, such as those used in enterprise management, database management, and other enterprise scenarios and situations.Įxclusions apply to potentially unwanted apps (PUA) detections as well.Īutomatic exclusions apply only to Windows Server 2016 and later. To exclude certain files from Microsoft Defender Antivirus scans, modify your exclusion lists. See Recommendations for defining exclusions before defining your exclusion lists. To exclude files broadly, add them to the Microsoft Defender for Endpoint custom indicators. See Attack surface reduction rules reference - Microsoft Defender Antivirus exclusions and ASR rules.įiles that you exclude using the methods described in this article can still trigger Endpoint Detection and Response (EDR) alerts and other detections. Some Microsoft Defender Antivirus exclusions are applicable to some ASR rule exclusions. Microsoft Defender Antivirus exclusions do apply to some Microsoft Defender for Endpoint capabilities, such as attack surface reduction (ASR) rules.
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