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How do I fix broken GPO and PolicyDefinition admx references?

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Last Modified: 2019-10-06
On a Windows Server 2012 R2 I ran the Windows 10 admx install.  I think that was a mistake.  I believe the server was converted to using the sysvol\domain\policies\PolicyDefinition store during this mistake.  I know have Computer Configuration | Policies | Administrative Templates errors.  Attached is a screen snip.  I have a copy of the PolicyDefinition folder, but I think I made it after running the Windows 10 admx install.  The admx files referenced in the snip are present in the PolicyDefinition folder, but I am guessing they are the wrong version.  Is there a way to fix this mistake?PolicyDefinition Missing admx files
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Distinguished Expert 2019

Have you also uploaded respective adml file with policy definitions folder under sysvol
If yes and if you still getting issues, you can simply backup sysvol/policy definitions folder and delete it from there
Force ad replication and this will force gpmc to use local server policy definition folder under system root
Distinguished Expert 2019

One more way could be install gpmc on windows 10 / windows 2016 machine and try operating gpmc from there

If you don't get any errors continue using windows 10 only for gpmc as admx are originally copied from windows 10 only
Senior IT System EngineerSenior Systems Engineer

Shaun VermaakSenior Consultant
Awarded 2017
Distinguished Expert 2019

This is a good opportunity to start using central policy store. You can also copy the correct versions to the Sysvol policy definition folder
Steven HelmsIT Support


Thanks for the help and suggestions.  Mahesh offered up more that I followed.  Ended up deleting the recent policies in the sysvol folder and recreating them.  Now to learn how to add the Windows 10 admx and adml files correctly.  Thank you.
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Senior IT System EngineerSenior Systems Engineer

OK. so does it mean that you perform inline upgrade from the same Domain Controller or install another Domain Controller that is Server 2019?

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