Tamper Protection can't be switched off, even with reg policy


infinity

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LyQMQqX.png

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I'm on the admin account, but I don't understand why it can't be switched off. Please share any other method that can disable this. Have already tried everything here: Enable or Disable Real-time Protection for Microsoft Defender Antivirus in Windows 11 Tutorial
 

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DigitalGoat

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You cannot edit the value directly, follow the embedded link in that tutorial for changing tamper protection setting before making other changes to Defender.
 

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Try3

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Have you checked the Registry Key's Permissions?
They are probably, Everyone can read, System can modify.
Hence the need to use the tutorial procedure.

Denis
 

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infinity

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Have you checked the Registry Key's Permissions?
They are probably, Everyone can read, System can modify.
Hence the need to use the tutorial procedure.

Denis
May I know where exactly is the tutorial for this? Read this but no mention of permissions for registry:

 

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Fabler2

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I have used PowerRun once to take full control of a registry key but that's a while ago. I would use with caution and create an image beforehand.

 

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Try3

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May I know where exactly is the tutorial for this?
The tutorial is as you posted.

Read this but no mention of permissions for registry:
I am saying that, because of the permissions applying to the relevant Registry Key, you should use the tutorial procedure instead.
To see the permissions, if that's what you are asking, right-click on the Registry Key & select Permissions.

All the best,
Denis
 

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Comport Colin

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The fact that you as admin cannot change the state of tamper protection can be achieved, if someone uses the Microsoft365 Defender Portal to limit what an admin may do. So if this is a company-owned machine, this could be the reason.
 

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infinity

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this is a PERSONAL pc, not company owned whatsoever.

the problem is still unsolved with the advice given above.
 

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Try3

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So what happened when you did Step 4 of the tutorial to turn off Tamper protection?

Denis
 

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infinity

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nothing happened. the settings remain as-is.
 

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Try3

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nothing happened. the settings remain as-is.

I think you need to post that fact in the tutorial thread and ask Brink for advice.

I think you will to include a brief history of Windows Defender 'customizations' on this computer since the last Windows installation and records of third-party antimalware utilities used/removed.

Best of luck,
Denis
 

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Brink

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Manually setting the registry for Tamper Protection will not work. The note box under step 4 was just for reference.

Tamper Protection can only be set via Windows Security to be effective.
 

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Fabler2

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I would have run a repair install by now.
 

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Bree

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No one has yet noticed or commented on the fact that the OP's screenshot shows that Tamper Protection is "managed by your administrator".

LyQMQqX.png



As far as I am aware, this can only be done through Intune, there is no local group policy for this. @infinity do you sign in with a work or school account?

Currently the only way to manage temper protection is through intune...
Go to settings => accounts => access work or school account. You should see your school account there. If you click on it and click on 'info', you will find what Intune policies might be active


When an IT organization is responsible for managing a fleet of Windows 10 user endpoints, IT admins can use Microsoft Intune to turn Tamper Protection on or off for all those managed computers through the Microsoft Endpoint Manager admin center portal. Administrators will need the correct permissions, such as global or security admin, to make changes to Tamper Protection.
 

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johnlgalt

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No one has yet noticed or commented on the fact that the OP's screenshot shows that Tamper Protection is "managed by your administrator".

LyQMQqX.png



As far as I am aware, this can only be done through Intune, there is no local group policy for this. @infinity do you sign in with a work or school account?







Maybe so - but he did say this:

this is a PERSONAL pc, not company owned whatsoever.

the problem is still unsolved with the advice given above.

Are you enrolled in the Insiders program, or else have a work account on your system?
 

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Comport Colin

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Quite probably, you, at some point, imported a registry file that "hardened" your machine, or some tool did the same.
MDM/Intune policies are registry based, so you need to research where and how they manifest and simply delete that.

On the other hand: why even care? Even with tamper protection on, you may still disable defender at will.
 

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Comport Colin

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Please look for MDM policies here:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager Go there and see if a search from there possibly finds "tamper"
 

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