CCleaner can now clean Microsoft Edge and IE12 browsers
is safe and useful for removing unused, temporary, junk and privacy related files (cache and cookies) for Internet Explorer, Firefox, Thunderbird, Chrome, Opera, Microsoft Edge, I do not
recommend using the built-in registry cleaner unless you have a good understanding of the registry
. However, CCleaner's registry feature is and requires a separate user action from the Cleaner so it cannot be used at the same time.
In the past, AV Comparatives
said this about registry cleaning software.
Some "classic clean-up software" such as "Ccleaner" are classified as "Useless" in this database because the Windows registry does not need any maintenance except if you are victim of a malware infection and because tweaking the windows registery does not speed up a computer at all. It does not mean that Cleaner and similar tools are not good for sweeping your harddrive and help to keep your privacy. Registry cleaners have been become social engineering products (e.g. Iobit Advanced System Care, CCleaner, Wise Registry Cleaner, etc.) and paying for this particular function is just a waste of money
In fact, Bleeping Computer DOES NOT recommend the use of registry cleaners/optimizers for several reasons.
Why you should not use Registry Cleaners and Optimization Tools
Be sure to read Microsoft's support policy for the use of registry cleaning utilities
in that topic.