UNLOCKER 1.9.0 BY CEDRICK ‘NITCH’ COLLOMB

It has many other flavors:

Cannot delete file: Access is denied

There has been a sharing violation.

The source or destination file may be in use.

The file is in use by another program or user.

Make sure the disk is not full or write-protected and that the file is not currently in use.

via UNLOCKER 1.9.0 BY CEDRICK ‘NITCH’ COLLOMB.

This is excellent freeware that will erase even the most annoying file that does not want to go away.