windows defender antivirus

3 Topics

Turning Off Tamper Protection on Workstations
How do I turn off Tamper Protection on a domain-joined Windows 11 workstation? The problem is a workstation has Windows Defender in Passive Mode instead of being in Not Running mode after installing a 3rd party antivirus. Windows Defender is making running network applications from the servers much slower because it's still real-time scanning. I also suspect Tamper Protection is also preventing network drive exclusions from working on this workstation and on the ones that use Windows Defender without a 3rd party antivirus. I've tried adding every registry entry, Group Policy, and PowerShell command on the local workstation I could find to disable Windows Defender, but nothing works. I'm assuming this is due to Tamper Protection ignoring everything? This is an on-premises domain and doesn't use Microsoft Intune or Microsoft Endpoint Configuration Manager.
Solved
David Owens
Dec 25, 2025 Place Windows Server for IT Pro
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Turn on Tamper Protection in WIndows Server 2022 by GPO
Hello I have Server 2022 with the latest ADMX templates but I still can't find a GPO setting that will turn on Tamper Protection. I could find the registry that is involved and deploy that by GPP. However as a lot of other Anti-Virus settings can be done by having explicit settings, why not this? I even asked Chat GPT but it kept telling the setting is in MAPS but it is not!!! I tried to find any AV admx templates but could not. Thanks in advance
JohnJoeBlueberry
Jun 02, 2023 Place Windows Server for IT Pro
1.5KViews
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No active antivirus provider
Hello, I have uninstalled 3rd party AV on the endpoints in my organization and have enabled Windows Defender AV by pushing endpoint security (Antivirus) policy through Intune. Still I am getting the message that there is 'No active antivirus provider. Your device is vulnerable' (Refer the attached screenshot). Any suggestions on how to fix it for all the endpoints.
Solved
AnuragSrivastava
Jun 22, 2022 Place Microsoft Defender for Endpoint
89KViews
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