we have windows domain, with a gpo where the drives are mapped, one of the users just one, has the problem the drives are not shown or disappears after a time. Strangely if you use any other programms or type the correct path you see them/works.
So you basically just dont see them with the windows explorer, they are mapped with the correct letter and evrything. For time being i gave the user a simple batch to restart the explorer.exe.
The user is using windows 10 with the latest updates. I had just one time just simliar issue where the cloned machine had this issue right at start after joining the domain. (I guess i used the same cloned image on this user too, but the other users never had this kind of problem)