Windows settings
How to safely delete temp files in Windows
Reviewed July 2026
No snake oil. Clearing temp files frees space on a full drive using only Windows' built-in tools. Here's what's safe to delete, what to leave alone, and the honest limit: it won't raise FPS on its own.
Step by step
01 Know what temporary files actually are
They're leftover caches, installer remnants, files from updates already applied, and the thumbnail cache. They're safe to delete — Windows recreates whatever it needs. Don't confuse 'temp' with your documents or programs.
02 Use Storage Sense or Disk Cleanup
The built-in tools are the safest. Go to Settings → System → Storage (Storage Sense), or run cleanmgr. Tick the safe categories: temporary files, thumbnail cache, delivery-optimization files.
03 Clear the %temp% folder
Press Win+R, type %temp%, and delete what you can. Files in use are skipped automatically — it's normal that some won't delete, don't force them.
04 Don't delete what isn't temp
Leave System32, Program Files and your Downloads folder alone (unless you know what's there). And skip 'registry cleaners': they overpromise, risk breaking things, and almost never add real speed.
05 Empty the Recycle Bin
Deleting files sends them to the Recycle Bin first. Emptying it is the step that actually frees the disk space.
06 Honest expectation
This frees space and helps a nearly-full drive breathe (which can reduce hitches while loading). But on its own it does not raise FPS. If you're after in-game performance, see the FPS and background-load guides.
Where Neon helps
Neon cleans safe temporary files without drama: it marks what's permanent before you confirm, skips what's in use, and never force-deletes.
- Cleans safe temp folders and caches, clearly marked as permanent before you confirm.
- Files in use are skipped and reported, not force-deleted.
- It never touches the registry with dubious 'cleaners' or invents a speed number.
To be transparent: freeing space helps a full drive, but it isn't an FPS trick. The installer isn't code-signed yet, so Windows SmartScreen may show a warning.
Questions about safety or what each change does? See the FAQ.