Recently my avast pro 4 updated to lated version but after that I have a red circle on avast! a-ball icon in system tray and when I click on it, the error message appears saying “the AAVM subsystem detected a RPC error. The operation could not be completed.”
How long have you had the pro version (and is this a trial version) ?
Another issue that can have this effect is - Have (or did) you another AV installed in this system, if so what was it and how did you get rid of it ?
The update could have been a catalyst that conflicted with remnants of a previous install.
Try a repair of avast. Add Remove programs, select ‘avast! Anti-Virus,’ click the Change/Remove button and scroll down to Repair, click next and follow.
As you recomended I’ve uninstalled the avast on the safe mode with Uninstall Utility and reinstall the latest avast. But still I have a red circle. !o!
The question i have been banging on about from the first post is any previous AV, as this can have a huge bearing on this, which is why I have been asking and asking and asking again.
If it is other AV related (or possibly Firewall as sded is asking) you can reinstall until you are blue in the face if it/they is the underlying problem.