Windows 10: Tamper protection is greyed out

My tamper protection is greyed out, and it says, "This setting is managed by your administrators." I have tried every possible way on the net, and I can't seem to turn this setting off. Anyone knows or can assist me on how to turn this setting off?

:)

 

Tamper protection managed by administrator - greyed

My concern is that tamper protection should be switchable on off within Defender and not be marked as managed by an administrator and greyed. I am not asking how to reverse the changes I have made to the one PC where i changed the registry value. There are times when i wish to disable Defender Realtime protection which is not possible with tamper protection turned on. As I don't sign into of my machines I cannot imagine the setting is synced at all.

 

Tamper protection managed by administrator - greyed

Greetings all I have 2 desktop's and a laptop all on 21H2 local accounts apart from apps being allowed to sign into my MS account. My laptop is dual booting 10 and 11. i am a home user in no way linked to any domains or work / school accounts. There is no other security on my computers. On all of my machines tamper protection is greyed and the setting is marked managed by your administrator. On one of my desktops I have changed the Tamper reg 5 to 0 which does turn it off however it is still greyed and marked managed by administrator. i have also tried removing WD permissions. All machines behaving the same way... Can somebody shed some light ?

 

Microsoft Defender Antivirus - Tamper Protection

We use Windows 11 with Microsoft Defender Antivirus and tamper protection enabled. During a penetest we found out, that Microsoft Defender Antivirus can be easily disabled by installing a third Party antivirus solution, even tamper protection is enabled. Of course, local admin rights were required, but we were very surprised, that tamper protection can be so easily levered out.

We think this is a serious security issue and opened allready two cases by MS, but never got any response.

Has somenone an idea or suggestion, how to solve this issue with tamper protection?