Hello,
Thank you for posting in Q&A forum.
I suggest you try to modify the group policy to prevent changing the desktop background, as follows:
- Press Win + R to open the Run window and enter gpedit.msc to confirm and open the Local Group Policy Editor.
- In the Local Group Policy Editor window, expand User Configuration - Administrative Templates - Control Panel - Personalization, find and double-click Prevent changing the desktop background. If this setting is enabled, users cannot change any desktop background settings.
I hope the information above is helpful.
Best regards
Zunhui
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