Desktop Folders Disappeared Mac Pro

If the above doesn't work, it might be a corrupt .plist.

Do a backup, preferably 2 backups on 2 separate drives.

Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J. When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder. Select Library. Then go to Preferences/com.apple.finder.plist and com.apple.desktop.plist (depending on your OS version, this .plist may not exist). Move the .plists to your desktop.

Re-launch Finder by restarting the computer and test. If it works okay, delete the plists from the desktop. Then reset your preferences as desired.

If the same, return the .plists to where you got it from, overwriting the newer one.

Thanks to leonie for some information contained in this.

You didn't accidentally enable the iCloud Drive and select the Documents and Desktop option, did you?

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First try relaunching the Finder.

>Force Quit>Finder>Relaunch