Windows Defender is the anti malware solution of Microsoft which built in into Windows 8 and newer operating system. Procedure: Access Add Roles and Features Wizard > FeaturesĬriteria: If “Windows Defender Features (Installed) is selected, this is a finding.įor Windows 10: Set the policy value for Computer Configuration > Administrative Templates > Windows Components > Windows Defender Antivirus set "Turn off Windows Defender Antivirus" to "Not Configured".Users must protected from any thread that can harm the company but at the same time IT Pro must be sure that users can't change configurations of any critical system or application that can cause serious problem in operation or in the security of the company. If there is a third-party antivirus product enforced on the system, the Windows Defender Antivirus must be uninstalled. This was a design choice by Microsoft to maximize protection in Server 2016/Server 2019. Microsoft has also removed API's for other Antivirus software to cleanly stop and disable Windows Defender AV. Note: This only applies when a third-party antivirus solution is enforced on the system.ĭue to changes from Microsoft in the Server 2016/Server 2019 architecture, Windows Defender Antivirus will not disable itself when other antivirus products are detected. HKLM\Software\Policies\Microsoft\Windows DefenderĬriteria: If the value "DisableAntiSpyware" does not exist, this is not a finding.įor Windows Server 2016/Windows Server 2019:
Procedure: Use the Windows Registry Editor to navigate to the following key: Verify the policy value for Computer Configuration > Administrative Templates > Windows Components > Windows Defender Antivirus > "Turn off Windows Defender Antivirus" is set to “Not Configured”. MS Windows Defender Antivirus Security Technical Implementation Guide A standard user cannot disable the service. An administrator account is needed to turn off the service.
When the setting is Not Configured and Defender Antivirus is the only AV solution, Defender AV will run (default state) and receive definition updates. Defender Antivirus will automatically disable itself and will enable if the third-party solution stops functioning. When the setting is Not Configured and a third-party antivirus solution is installed, both applications co-exist on the system without conflicts. Users will see conflicts and the system may lock up until the two solutions finish processing. The two AV solutions both attempt to quarantine the same threat and will fight for access to delete the file. When the setting is Disabled and a third-party antivirus solution is installed, the two applications can both simultaneously try to protect the system. If you enable this policy setting Windows Defender Antivirus does not run and computers are not scanned for malware or other potentially unwanted software. This policy setting turns off Windows Defender Antivirus.
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