How to Free Up Disk Space on Windows 11

When the drive gets nearly full, Windows 11 doesn't just warn you — it also runs noticeably slower. Freeing up space is one of the fastest improvements you can make, and you don't need to delete anything important.

The simple explanation

Over time, temporary files, old updates, app caches and forgotten downloads you no longer need pile up. Windows 11 has its own tools to find and safely clear all of this, without going folder by folder by hand.

Step by step

1. Use Storage Sense

Go to Settings → System → Storage and turn it on. It automatically clears temporary files and the recycle bin on a schedule, so you don't have to remember to do it yourself.

2. Delete temporary files manually

On that same Storage screen, tap "Temporary files" and check what you want to remove: Windows Update cache, thumbnails, error reports. It's completely safe — Windows won't let you delete anything it still needs.

3. Check what's using the most space

In Settings → Storage you'll see a breakdown by content type (apps, documents, images...). It's the fastest way to find out what's actually eating up your space.

4. Uninstall apps you don't use

Settings → Apps → Installed apps
Sort by size and check what you haven't opened in months

5. Empty the Downloads folder

It's the folder that fills up fastest with installers, PDFs and files that already served their purpose. Go through it and delete what you don't need to keep.

Common mistakes

A common mistake is deleting the Windows.old folder without knowing what it is: it holds your previous installation in case you need to roll back after a major update. If it's been more than 10 days without issues, it's safe to remove via Storage Sense — not by deleting it by hand.