Our advice, and Microsoft's, is - don't use any registry cleaner with Windows 10 - if you do you may 'break' your Windows 10 and have to reinstall Windows from scratch. In fact we reccomend that you leave all registry entries in Windows 10 alone.

(It's part of the upcoming Spring 2021 update to Windows 10, it's just been put on most machines early in preparation for the update).

You can see some in the screenshot below as selectable options in Registry > Registry Cleaner.įiles and data that you can clean in the Windows Registry:Ĭlick the Registry icon to see all the available Registry cleaning rules that CCleaner for Windows can use.That is a system entry relating to a system file and Windows is putting it back if you remove it, leave it alone. These are the specific files and data that you allow CCleaner to clean from your system (or fix), as is the case with the Registry Cleaner. The Registry Cleaner is designed to clean this part of your operating system to help prevent errors. Installing, upgrading, or uninstalling software on your computer can cause files stored in the Registry to get broken or go missing, which causes errors. The Windows Registry contains files that act as settings for your computer's operating system, such as when you choose to run an antivirus program or what you've chosen as your desktop background.

If you only want to view the cleaning rules, skip to Files and data that you can clean in the Windows Registry below. This page briefly explains what the Registry Cleaner is, what 'cleaning rules' are, and clearly explains the specific options it gives you.

Registro ccleaner piriform