What's Actually Going On?

Many applications create temporary files while they are running. These files are used for short-term data storage during installations, updates, or processing tasks. Windows stores most of these files inside special Temp folders. Over time, these folders can grow quite large because programs do not always clean up after themselves.

How to Open the Temp Folder

  1. Press Windows + R to open the Run dialog.
  2. Type %temp% and press Enter to open your personal Temp folder. (Storing your temporary files).
  3. Navigate to C:\Windows\Temp to access the system Temp folder. (Storing temporary files used by the operating system).
Two different temp folders, as illustrated below

Delete Unused Files

Most files inside these folders can be safely deleted. If Windows refuses to delete a file, it usually means that file is currently in use by a running program - skip it for later.

What You Should Not Do

  • Do not delete files from Temp folders while important applications are running.
  • Do not worry if some files cannot be deleted - they are simply in use.
  • Do not assume large Temp folders with funny names mean malware or system problems.

Final Thoughts

Temp folders store short-term files used by Windows and applications. Cleaning them occasionally can free up space, but Windows will recreate temporary files automatically when needed.