LetGoFileLetGoFile
OUTLOOK.EXE

When OUTLOOK.EXE is holding your file

Try this before you force the program to quit. This way you keep unsaved work.

How to release it without ending the program

Outlook keeps holding an attachment while it is open. Close the attachment window.

If that still does not work

  1. Close the program and delete
  2. Unlock and delete
  3. Move to Recycle Bin
  4. Delete after restart

Get LetGoFile and drop the file on it — it names what is holding the file, PID and all.