That is why, I only use registry cleaners, which I know will not remove any needed registry keys. Yes, the average user will have trouble telling if a registry key is needed or not. So here is a list of registry cleaners, which should never delete needed registry keys.Unfortunately, not everyone knows what these registry keys do , and most of them assumed it is obsolete because this registry cleaner says so. Some of them might related to Windows functions and features or even your browser stuff. By removing those registry keys with a big " ? " on your head is a big no no for me. I learned my lesson from Advanced Systemcare in the past.
Auslogics Registry Cleaner. It's even safe to enable all the categories that are unchecked by default, except for Missing Software.
VIT Registry Fix Pro - as long as you disable Deep Scan. However, in the trial version, most times you launch it, Deep Scan will be unavailable.
Just about everything else, will want to delete at least some valid registry keys.
To make it clear, you don't need to clean the registry and it very rare (but still possible) for a registry cleaner to fix issues with your computer, or make it run faster.