Un.exe ~upd~ May 2026

Open Task Manager ( Ctrl + Shift + Esc ), find un.exe , right-click, and select End Task . Do this before deleting the file.

Navigate to the file’s location (use "Open file location" in Task Manager if you didn't close it) and delete un.exe . If you get "Access Denied," use a tool like LockHunter or Autoruns from Microsoft Sysinternals to unlock it. un.exe

Every so often, a filename starts circulating in IT support forums and Reddit threads that makes administrators break out in a cold sweat. The current contender for "Most Suspicious File of the Year" is a small, unassuming executable named un.exe . Open Task Manager ( Ctrl + Shift + Esc ), find un

Restart your PC and press F8 (or Shift + Restart) to boot into Safe Mode with Networking . This prevents the malware from loading its drivers. If you get "Access Denied," use a tool