An "insufficient disk space" message or a C drive that turns red slows down the entire machine and blocks updates. The good news is: Windows 11 includes everything you need to free up disk space without third-party software or risk to your files.
Quick answer: To free up disk space on Windows 11, go to Settings > System > Storage, enableStorage Sense to automatically delete temporary files, then empty the Temporary Files and the Recycle Bin. Next, uninstall any unused applications.
1. Analyze what is occupying your disk
Open Settings > System > Storage. Windows displays the space allocation by category: apps, temporary files, documents, etc. This is the starting point for freeing up disk space intelligently.
2. Activate the Storage Assistant
On the same page, enableStorage Sense. It automatically deletes temporary files and empties the Recycle Bin at the frequency you choose. This is the easiest way to save space over time.
3. Delete temporary files
Still under Storage, click Temporary Files. Select the items you want to delete (temporary internet files, thumbnails, old Windows update files) and then click Delete Files. These items will recreate themselves as needed, so deleting them is safe.
4. Use Disk Cleanup
The classic tool remains effective: type Disk Cleanup in Windows search, select drive C, and then choose the categories to clean. The Clean up system files allows you to go further.
5. Uninstall unused applications
Go to Settings > Apps > Installed apps. Sort by size and uninstall any apps you no longer use. This is often where several gigabytes of data are hidden.
Bonus tip: OneDrive on demand
With OneDrive, enable files on demand : your documents stay in the cloud and only take up space on your hard drive when you open them. Ideal for a laptop with a small hard drive.
Frequently Asked Questions
Is it risky to delete temporary files?
No. Temporary files and the contents of the Recycle Bin can be safely deleted. Windows automatically recreates them when necessary.
My hard drive is still filling up after cleaning, why?
A hard drive that fills up quickly can indicate a drive that is too small, large local backups, or a software problem. A technician's diagnosis will identify the cause.
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