Registry Cleaner

[nukecad]

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:

i get a registry error on ccleaner on windows 10 i have scanned 5 times

Cleaning up the registry may still have merit for our users on Windows 7 and below. The use case for the registry cleaner on Windows 10 is if: You have a specific problem that you are trying to resolve; or You are trying to locate and/or shred leftover registry entries from a specific piece of software that you have uninstalled from your computer When we next have a major UI refresh, the registry cleaner will likely be moving under the Tools menu to reflect that: Regist…

Here is Microsofts’ advice on using any Registry Cleaner:

Microsoft support policy for the use of registry cleaning utilities -...

PS. We moderators have spent years persuading CCleaner to move the Registry Cleaner into the ‘Tools’ menu so that unwary users were less likely to break their registry using it blindly.
We had just succeded and it was moved earlier this year.
Imagine our feelings when along comes CCleaner 7 sticking an even more agressive Reg Cleaner right under unwary peoples noses again - I for one am now expecting many more posts like your own.