How can I change the owner of a file on Windows XP professional. The case is also in progress when we had to reload the ghost file after deleting the corrupted version of Windows XP. Before I could undo the file protection, the change was also made, and the access to the file also became impossible. I attempted it by adding the existing owner profile to the owner list, but I got an "Error Code 5" message. Is there any other way that you can access to the files on the computer?