Struggling to Apply Desktop Wallpaper GPO: Security Denied Issue

June 20, 2025 1 answer
Asked by TechieWizard42
I'm trying to set a desktop wallpaper for certain computers using Group Policy Objects (GPO), and I'm hitting a snag. The wallpaper setting is found under User Configuration (User Config -> Admin Templates -> Desktop -> Desktop -> Desktop Wallpaper). Here's what I've done so far: - The computers that should get the GPO are in a Universal Security group. - I created a GPO to set the Desktop wallpaper (complete with the image path) and linked it to a GPO above the applicable computers and the security group. - I've enabled Loopback processing in Merge mode. - I added the Universal Security Group to the GPO's Security Filtering and removed Authenticated Users. - I then added Authenticated Users back to Delegation with just "Read" rights. - Finally, I made sure the target hosts can access the wallpaper file location. When I check with GPresult as a standard user, the GPO is listed but it's denied due to security issues: Apply-Wallpaper Filtering: Denied (Security) Running GPresult as an elevated user with computer scope confirms the GPO is listed, but it's not applied. I'm wondering what I might be missing here. I've heard something about needing to apply User configuration based on computer object membership, but I thought Loopback handled that. Plus, I made sure to re-add the Read permission for Authenticated Users. Any ideas?

Answers

AdminGuru88
It sounds like you're on the right track! If you're aiming to have those Windows 10 systems show a specific wallpaper, linking the GPO directly to the OUs with those users could solve the problem. Just set the Security Filtering to allow Authenticated Usersโ€”this might ensure the GPO is applied without issues. Alternatively, you could incorporate the wallpaper settings into an existing GPO thatโ€™s already applying successfully. It's often easier to modify GPOs that are working than to troubleshoot one that's encountering security denials.

PixelPlayer99: That's a good point! But the issue is that the affected systems are mixed in with already updated systems across multiple OUs. I can't just throw them all into a single OU because we have other essential GPOs in play.

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