How to Free Up Disk Space on Windows 11: 6 Proven Methods

Watching that “Low disk space” warning pop up while you’re trying to install an update or save a project is one of the more quietly stressful moments in computing. The good news is that a nearly full drive on Windows 11 is almost always fixable in fifteen minutes, and you rarely need third-party software to do it. Between built-in tools like Storage Sense, Disk Cleanup, and DISM, most people can reclaim anywhere from 10GB to 30GB, sometimes far more if the machine has been running for a couple of years. This guide walks through every method in the order I’d actually use it, starting with the safe one-click options and finishing with the advanced component-store cleanup that heavier users may need.

Key Takeaways

• Start with Storage Sense and Cleanup recommendations in Settings; they safely remove junk automatically and are the fastest first step.
• Disk Cleanup (cleanmgr) and clearing temporary files together typically free several gigabytes with zero risk to your documents.
• Uninstalling apps you no longer use and emptying the Recycle Bin and Downloads folder often reclaim more than any single system tool.
• Disabling hibernation removes hiberfil.sys and can free 8GB to 16GB depending on how much RAM you have.
• For long-lived PCs, the DISM component cleanup shrinks the WinSxS folder and can recover another few gigabytes after months of updates.

1. Turn on Storage Sense and Cleanup Recommendations

This is the modern, hands-off approach and the best place to begin.

1. Open Settings (Windows key + I) and go to System > Storage.
2. Click Cleanup recommendations. Windows scans your drive and groups reclaimable data into Temporary files, Large or unused files, Files synced to the cloud, and Unused apps.
3. Tick the categories you’re comfortable removing, then click the Clean up button for each section.
4. Back on the Storage page, turn on Storage Sense. Under its settings, enable Automatic User content cleanup and set Run Storage Sense to “During low free disk space” so it maintains things going forward.

Storage Sense will now clear the Recycle Bin and temporary files on a schedule, so this problem is less likely to return.

2. Run Disk Cleanup (cleanmgr)

The classic Disk Cleanup tool still exists in Windows 11 and catches items Storage Sense sometimes skips, such as old Windows Update files and delivery-optimization caches.

1. Press the Windows key, type Disk Cleanup, and press Enter (or run cleanmgr).
2. If prompted, choose your system drive (usually C:) and click OK.
3. Tick boxes such as Temporary files, Thumbnails, and Delivery Optimization Files.
4. To go further, click Clean up system files. After it rescans, you’ll see extras like Windows Update Cleanup and old Previous Windows installation(s) (the Windows.old folder), which can be several gigabytes on their own.
5. Click OK, then Delete Files to confirm.

3. Clear temporary files manually

If you’d rather see exactly what’s being deleted, you can empty the temp folders yourself. Temporary files are safe to remove; Windows only keeps ones still in use and skips those.

1. Press Windows key + R, type %temp%, and press Enter to open your user temp folder (this is C:UsersYourNameAppDataLocalTemp).
2. Press Ctrl + A to select everything, then Shift + Delete to remove it. Skip any file that says it’s currently in use.
3. Repeat for the system temp folder: in the Run box type C:WindowsTemp and clear its contents the same way.
4. Empty the Recycle Bin afterward so the deleted files actually leave the drive.

4. Uninstall apps and games you no longer use

Large applications and modern games are frequently the single biggest space hog, and this is the highest-value cleanup for many people.

1. Go to Settings > Apps > Installed apps.
2. Click the Sort by dropdown and choose Size so the biggest offenders rise to the top.
3. For anything you no longer need, click the three-dot menu and select Uninstall, then follow the prompt.
4. Be cautious with items labeled as manufacturer or driver software; when in doubt, search the app name before removing it.

5. Empty Downloads, the Recycle Bin, and move files off the drive

The Downloads folder quietly collects installers, ZIPs, and PDFs you’ll never open again, and deleted files sit in the Recycle Bin taking up space until it’s emptied.

1. Open File Explorer, click Downloads, switch the view to Details, and sort by Size. Delete the large leftovers you don’t need.
2. Right-click the Recycle Bin on the desktop and choose Empty Recycle Bin.
3. For big folders you want to keep, such as photos and videos, move them to an external drive or upload them to cloud storage like OneDrive.
4. In OneDrive, turn on Files On-Demand so synced files live in the cloud and only download when opened, keeping local space free.

6. Advanced: disable hibernation and clean the component store with DISM

If the drive is still tight after the steps above, or you maintain an older machine, these two power-user moves reclaim space the graphical tools can’t. Both use an elevated Command Prompt (search cmd, right-click, and choose Run as administrator).

1. To remove the hibernation file (hiberfil.sys), run powercfg /hibernate off. Windows deletes the file automatically and frees space roughly equal to your installed RAM. Note you’ll lose the Hibernate power option, though Sleep and Shut down still work.
2. To check how much the component store is really using, run Dism.exe /Online /Cleanup-Image /AnalyzeComponentStore. The “Actual Size” line is the space genuinely on disk, since File Explorer over-reports the WinSxS folder because of hard links.
3. To shrink it, run Dism.exe /Online /Cleanup-Image /StartComponentCleanup. This removes superseded versions of updated components, typically freeing 1GB to 5GB, and more on a PC with years of cumulative updates.
4. Let each command finish completely before closing the window, and never delete the WinSxS folder by hand; Windows needs it to update and repair itself.

Frequently asked questions

How much space can I realistically free up?

For most people the built-in tools reclaim 10GB to 30GB in a single pass. If you also uninstall large games, disable hibernation, and run the DISM cleanup on a machine that’s a few years old, recovering 40GB or more is common.

Is it safe to delete temporary files?

Yes. Temporary files are leftovers from installers, updates, and app sessions, and Windows only removes ones no longer needed. If a file is currently in use it will be skipped, so you won’t break a running program by clearing the temp folders.

Should I turn hibernation off?

It’s a good trade if you never use the Hibernate option and want the space, since hiberfil.sys can be 8GB to 16GB. If you rely on hibernation to resume long sessions quickly, leave it on and free space through the other methods instead.

What is the WinSxS folder and can I delete it?

WinSxS (the component store) holds the files Windows uses to install updates, repair itself, and roll back changes. Never delete it manually. The safe way to shrink it is the DISM StartComponentCleanup command, which removes only the outdated, superseded components.

Will Storage Sense keep my drive clean automatically?

Yes, once enabled it runs on a schedule, clearing the Recycle Bin and temporary files without prompting. Setting it to run “During low free disk space” is the least intrusive option and quietly prevents most future warnings.