avast wont work after update

Hello this morning I updated my avast acount and after that I only receive errors when I try to start it.
I use windows vista.
The error says the rpc server is not availeble or av service is not responding.

Is there someone who can help me

Repair >> https://www.avast.com/faq.php?article=AVKB204#artTitle

Uninstall >> https://www.avast.com/uninstall-utility
Uninstall >> https://www.avast.com/faq.php?article=AVKB10#artTitle

Reinstall >> https://forum.avast.com/index.php?topic=196445.0