Hello Eddy and anyone who might like to try this
Make sure Terminal Services is set to Automatic
(For some reason mine was disabled and I was unaware of this)
Purely by accident and having tried other AV's and been unhappy with one of them, I tried AVG and had exactly the same problem with the UI.........then I read up about it and see that AVast and AVg are sort of merged in some way, so I thought..............i might as well go back to Avast Free and try some other trouble shooting.........
I ran Task Manager and looked under processes to try to get more understanding of what might be the issue, though not really knowing what I was looking for.............I clicked through all the tabs in TM and when I got to USERS I thought it was a bit odd that there were no users listed!
I googled, as you do and found the suggestion about terminal services to resolve the User issue, and in doing this, it resolved the UI issue, for me, in Avast!
Voila
SS