What Does Disk Cleanup Do in Windows 10?

Disk Cleanup helps free up space on your hard disk, creating improved system performance. Disk Cleanup searches your disk and then shows you temporary files, Internet cache files, and unnecessary program files that you can safely delete. You can direct Disk Cleanup to delete some or all of those files.

Is it safe to do a Disk Cleanup?

For the most part, the items in Disk Cleanup are safe to delete. But, if your computer isn’t running properly, deleting some of these things may prevent you from uninstalling updates, rolling back your operating system, or just troubleshooting a problem, so they’re handy to keep around if you have the space.

What will Disk Cleanup remove?

The Disk Cleanup utility built into Windows removes temporary, cache and log files created by the operating system and other programs — never your documents, media or programs themselves. Disk Cleanup won’t remove files that your computer needs, making it a safe way to free up a bit of space on your PC.