Published 16 June 2026 · Windows · by the 365 Techies team — Microsoft Partners & Dell specialists, looking after Dorset since 1995
You do not need a third-party ‘cleaner’ app (we would steer you away from those). Everything here uses Windows’ own tools. Work down the list and stop when you have enough room.
See what is using the space
Go to Settings > System > Storage to see exactly what is filling your drive. Then empty the Recycle Bin and your Downloads folder — both quietly hoard gigabytes. Turn on Storage Sense to clear temporary files automatically from now on, and run Disk Cleanup for a one-off sweep.
What is safe to delete — and what to leave
Temporary files, the Recycle Bin and old downloads are safe to clear. Leave anything in Windows, Program Files or folders you do not recognise well alone. The biggest space-savers are usually photos and videos — move them to OneDrive or an external drive (see how to back up your photos), and uninstall apps you no longer use.
Key points
- See what is using space in Settings > System > Storage
- Empty the Recycle Bin and your Downloads folder
- Turn on Storage Sense to clear temporary files automatically
- Run Disk Cleanup for a one-off sweep
- Uninstall apps you no longer use
- Move photos and videos to OneDrive or an external drive
- Clear your web browser cache
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