I have this exact same issue on TWO different Windows 10 Pro systems. So much so I have removed AVAST on both for the moment bexause I cannot get it to work.
I have tried both AVAST Free and my AVAST INTERNET SECURITY .. I get the same issue as OP for both.
Believe me .. I have tried all the usual fixes like avclear etc etc, no joy.
Any ideas ... As ye know TERMINAL SERVICES is not part of Win 10. DCOM SERVER PROCESS LAUNCHER is, and thats enabled, automatic
Im wondering is it another service possibly disabled that AVAST needs? Any thoughts on that? What services need to be on?