Why does ccleaner always skip any thing microsoft edge.
Edge, and anything related to Edge, must be closed.
As to what all those other 'Edge' activities are, I'm not sure, but it definitely includes Internet Explorer, but may also include other MS controlled processes, say for example, Windows Live Mali or Skype.
But a reason could also be that CC v5.23 (and maybe v5.24) is currently having some cleaning issues dealing with IE and Edge - not made any easier by the ongoing updates in those programs and in Windows 10.
As a little test, if you start the PC in Safe Mode, does CC clean any better?