If you have your games installed on a different drive or partition to Windows, you can simply right-click on the drive/partition and select Format. Then take the following precautionary steps moving forward. I’ve personally never had any luck using this solution but a lot of other users have so it’s worth a shot. You may need to use the Hidden Administrator account to action this. Simply go to the location you have your Game Pass Games installed, then change ownership of the folder to yourself (as admin) then delete the WindowsApps folder. Windows prevents any kind of access to this location so you’ll need to change ownership of everything to gain access. Once you are in this location make sure Delivery Optimization Files is ticked then click Remove files to clear everything.Ĭhange folder ownership of the WindowsApps folder that ARK: Ultimate Survivor Edition is installed.The first option is to go to Settings > System > Storage > Temporary Files > Delivery Optimization Files.However, it doesn’t work for everyone (for whatever reason). Delete Delivery Optimization files to remove ARK: Ultimate Survivor Edition from Game Pass properly.Ĭlearing the Delivery Optimization files seems to work very well to remove games that don’t uninstall from Game Pass correctly.

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