I upgraded a PC to Windows 7 (Ultimate x64) from Vista when it was part of a domain.
I later removed it from the domain.
I now cannot take ownership as an Administrator user of a certain file on my system harddrive.
Through properties | security | advanced | owner dialog box it says "Unable to display current owner" and when I click "Edit" and I try to set it to the Administrators group or a specific user in that group it brings up a dialog that says "Unable to set new owner on [file]. Access is denied"
When I run the cmd as administrator and similarly try "takeown" I get "INFO: Access is denied."
I do not have access to the domain server but do have access to the username and password that it probably thinks owns it.