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AppControlCodeIntegrityPolicyBlocked is blocking svhost.exe when trying to open Explorer, system settings, etc

Anonymous
2023-10-17T21:36:45+00:00

I have been trying get support on this issue we are seeing on a few systems across our campuses. When users log into their computers all icons disappear then they try to launch the start menu or explorer or settings and they see a Application Control window. We have deployed Defender ATP and manage security policies in Intune. When I search security.microsoft.com portal device logs I see this "svchost.exe was prevented from executing by App Control code integrity policy". We have never setup any code integrity policy. There seems to be a default policy am I correct on assuming this? Do I disable Application control? Any suggestions?

Here is part of what it says in the logs that I downloaded. Also, this happens on a newly imaged system but is not happening on all system which is strange.

{"PolicyID":"SIPolicyEnfWDAG.10.0.3.14","PolicyName":"SIPolicyEnfWDAG","Requested Signing Level":"Trusted by WDAC policy","Validated Signing Level":"Unsigned"}
Windows for home | Windows 10 | Security and privacy

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  1. Anonymous
    2023-10-18T12:30:59+00:00

    Dear RubenRSCCD

    Thank you for posting in the Microsoft community.

    Unfortunately App Control code integrity policy is not supported on the Microsoft Answers forum. It is more suitable for publishing on Microsoft Learn (English only), you can click on "Ask a question", there are experts who can provide more professional solutions in that place.And share the link for you.

    https://learn.microsoft.com/en-us/answers/tags/380/windows-10-security

    I won't be able to help you, but I'll leave that question open in case one of our amazing volunteers has ideas for you.

    Best Wish

    Shawn Z  | Microsoft Community Support Specialist

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  2. Anonymous
    2023-10-18T17:54:16+00:00

    Hi, good day! I'm John DeV a Windows user like you and I'll be happy to assist you today.

    I want to apologize that this is just a consumer forum for home users. Due to the scope of your question, it is best to ask this on Microsoft Site Q&A which is a technical community platform where most of the members were IT professionals that would greatly help you with the issue.

    Microsoft Site Q&A

    https://learn.microsoft.com/en-us/answers/quest...

    Stay safe and have a great day.

    Kind regards,

    John DeV

    Independent Advisor

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