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Application blocked by windows defender application control

Kyra Brandt 0 Reputation points
2023-06-19T20:13:09.51+00:00

My applications are being blocked by Windows Defender Application Control and I can't seem to turn it off. I've checked Intune policies, Group Policy, RegEdit and they are have PUA disabled, but I still can't open apps that I used to able to use.AppBlock

Microsoft Defender for Cloud
Microsoft Defender for Cloud
An Azure service that provides threat protection for workloads running in Azure, on-premises, and in other clouds. Previously known as Azure Security Center and Azure Defender.
1,215 questions
Microsoft Configuration Manager Application
Microsoft Configuration Manager Application
Microsoft Configuration Manager: An integrated solution for for managing large groups of personal computers and servers.Application: A computer program designed to carry out a specific task other than one relating to the operation of the computer itself, typically to be used by end users.
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  1. Simon Ren-MSFT 30,676 Reputation points Microsoft Vendor
    2023-06-20T06:47:00.7433333+00:00

    Hi,

    Thank you for posting in Microsoft Q&A forum.

    Please double check Intune policies, Group Policy, and RegEdit settings. You may also need to check if there are any other policies or settings that are preventing the execution of your applications. Here are some additional steps you can take to troubleshoot this issue:

    1. Check the Windows Defender Application Control policy settings on your device. You can access this by going to Control Panel > System and Security > Windows Defender Firewall > Advanced Settings. From there, select Windows Defender Application Control and check the policy settings.
    2. Check if there are any other security software or settings, such as antivirus or firewall, that may be interfering with the execution of your applications.
    3. Use the Windows Event Viewer to check for any error messages or events related to the blocking of your applications. This may provide more information on the cause of the issue.
    4. If you are still having issues, you can try temporarily disabling Windows Defender Application Control to see if your applications can be executed. Re-enable this feature after troubleshooting to maintain the security of your device.

    A similar thread for your reference:

    Office -outlook blocking on devices for autopilot

    Thanks for your time. Have a nice day!

    Best regards,

    Simon

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    1 person found this answer helpful.
  2. Simon Ren-MSFT 30,676 Reputation points Microsoft Vendor
    2023-06-21T06:32:35.34+00:00

    Hi,

    Thanks for your reply.

    1,Can we see any firewall rules about this? We can also run the gpresult command to see if there is any group policies about this.

    2,If possible, we can temporarily disable firewall to have a try.

    Thanks for your time. Have a nice day!

    Best regards,

    Simon

    If the response is helpful, please click "Accept Answer" and upvote it.

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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