Will CCeaner work with Windows 11

Will Windows 11 require any update of CCeaner?

Can I use CCeaner on the advance copy of Windows 11?

Ccleaner doesn't support betas as they are likely to change. I assume admins are running and testing win11 just as you are and will have a version that is supported on win11.

That said as long as you don't use the more dangerous tools (registry integrity, driver updater, drive wiper etc) you should be ok, just guessing. this should not be construed as anything more than a bored american guessing and nowhere near an official statement.