I have been using CCleaner for a couple decades. All of a sudden the Registry Cleaner util quit working. It finds 50-some issues, but will not “fix” them.
We recommend that you don’t regularly use the Registry Cleaner with Windows 10 or 11, only use it if you have a specific problem.
The Registry Cleaner is meant as a tool for fixing things if there is a problem, it is not meant for regular use.
Using any registry cleaner will not speed up your machine in any way, and only saves a few KB of disc space.
Using a registry cleaner on a healthy machine can even ‘break’ it.
Windows 10/11 changes the registry too often to make using any registry cleaner totally safe.
Running any Registry Cleaner regularly can, and does, lead to problems.
For the official Piriform advice on using the CCleaner Registry Cleaner see this:
Here is Microsofts’ advice on using any Registry Cleaner:
Thank you. I use Windows 10 and generally only use the Registry tool about once a month to look for problems and clear garbage. Now all of sudden I use the Registry tool, it finds 50-some “issues”, and I choose to “fix” them. Then I use the tool again to check and it finds the same 50-some issues. It didn’t clear them out.
In that case they are needed, so as you remove then Windows puts them straight back.
We’ve previously noted several that do that, looks like you have a lot more.
See this, particularly the ‘One last note:’
You can add them to Options>Exclude if you are going to keep using the reg cleaner and don’t want to see them again.