Clean Up Junk Files in Windows
Reclaim space and speed with safe built in tools
Scan time
Performance gain
Fix apply
Why Junk Files Accumulate On Windows
Every app generates temporary files. Installers leave logs and caches. Windows Update stores packages for reliability. Over time, these harmless leftovers add up and crowd the system drive.
When storage gets tight, Windows spends more time moving files around and less time launching apps. Cleaning junk files not only frees space, it reduces background maintenance work that scans those folders.
Safe Places To Clean
- Windows Update Cleanup and Delivery Optimization
- Temporary files and caches
- Old logs and error reports
- Large downloads and installers you no longer need
Automate Routine Cleanup
Set Storage Sense to run weekly and flush the Recycle Bin after 30 days.
FAQ
Will cleaning junk files delete my documents
No. Storage Sense and Disk Cleanup target temporary locations. Always review selections before confirming.
How often should I clean junk files
Monthly is a good default. Heavy users can clean weekly. Storage Sense can automate it.
Do browser caches matter
If storage is tight, clearing large browser caches helps. Otherwise, the performance benefit is small.