Executable Files will not run on any computer in my network including servers all of a sudden

Question

All of a sudden, no windows computer in my network will run an executable including servers.
Some of these Windows 10 computers are joined to the network and others are not.
Obviously, the servers are joined to the domain.

I cannot figure out what changed as I have not made a GPO in a long time and made no changes on the servers.

Answer 1

Hello,

Since the issue affects both Domain and Workgroup computers, it is hard to define what can be applying in these computers at the same time.

Some suggestions could be:

• Someone has enabled incorrectly AppLocker. Please check https://learn.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/applocker/delete-an-applocker-rule
• There is some GPO applying to this computers that will establish some firewall rules. Run "GPRESULT /H output.html" and in the Output file check the applied policies and what settings are in GPEDIT.

On th other hand, if this was isolated computers, you can try the next:

• Run an image repair (recommended to run using a downloaded image, mounted) https://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/repair-a-windows-image?view=windows-11
• Disable Windows Firewall
• Then perform a clean boot in order to avoid 3rd Party tools interfering: https://support.microsoft.com/en-us/topic/how-to-perform-a-clean-boot-in-windows-da2f9573-6eec-00ad-2f8a-a97a1807f3dd

Hope this helps with your query

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Answer 2

What are you trying to run? How are you trying?