DavidR
9
This is weird, having got rid of programs that may possibly have had an interaction with the avastui.exe file, I would have expected it to appear.
Since it didn’t I would have suspected some form of corrupt installation, but a clean reinstall should have taken care of that.
I’m at a bit of a loss as to what else to suggest, I just wonder if delaying it slightly might help. Try this from the avastUI (I know, when loaded) > Settings > Troubleshooting and check the ‘Load avast! services only after loading other system services’ option.