A free, open-source alternative available on the 7-Zip Official Site .
Be extremely cautious when downloading any file named Unlocker.rar from unofficial sources. Unlocker.rar
Type "Resource Monitor" in your start menu, go to the CPU tab , and search for the filename in the Associated Handles section to see what is blocking it. A free, open-source alternative available on the 7-Zip
The original tool for this format, which can be found at RARLAB . go to the CPU tab
This is the easiest way to release any stuck file handles.