Some answers did not have much context so here are some steps
- Make sure Epic games launcher is Not running
- go to files
- go to local disk if you don’t have that go to Windows (C:)
- Press Users
- Press UsersName
- go to the top of the tab and press view then press hidden files on
- once you have done that press appdata
- go to webcache and delete whats in the folder but not the folder and once deleted and it does not let you delete all go to one of the files and delete whats in it or whatever you can delete