Hello
Thank you for your question and reaching out. I can understand you are having query\issues related to prevent users to save files on Desktop.
You can certainly achieve using Group policy
- Open GPMC.msc go to Computer Configuration > Policy > Windows Settings > Security Settings > File System
- Right click and add %userprofile%\Desktop .or the different folders that you want to restrict access to.
- Specify the rights for the specified folder(s) for users or user groups.
Reference :
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