Quick assist admin prompt doesn't appear from assisting user(black screen)

Question

I already disabled "User Account Control Switch To The Secure Desktop When Prompting For Elevation" in intune but still getting black screen(assisting user) whenever a UAC for admin creds prompt appears.

And below is my test PCs current enabled UAC gps

Answer 1

@Aldien Dela Cruz, Thanks for sharing the solution. I am glad the issue is resolved. Here, please let me write a summary for our issue to let others quickly find the solution.

Issue:

Disable "User Account Control Switch To The Secure Desktop When Prompting For Elevation" in Intune but still getting black screen(assisting user) whenever a UAC for admin creds prompt appears.

Resolution:

Thanks for your time and have a nice day!

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Answer 2

I only use these settings in Intune Settings Catalog to control UAC. I also removed UAC from Security Baseline and Quick Assist works on my Windows 11 machines without black screen.

Answer 3

Found the solution by configuring the UIA elevation prompt behavior​. To do this, add a Windows template Under the Endpoint protection > Local device security options and configure as follows: