RPC error red ball with vista

Avast Free Antivirus / Premium Security
1

I have had avast for a year , and after a shutdown my blue ball was gone , uninstalled and installed now I have this error , blue ball is back, but with the RPC error . I have tried everything that i have read , i have vista 64 , no new changes to my pc , worked great for over a year , thanks for some help

2

http://www.avast.com/eng/faq-other-questions.html#idt_1539

3

Thanks but i have tried this several times and it wont work , notice it wont work with vista

4

For sure it works on Vista 64bits.

Can you try to repair your installation?
Go to Control Panel > Add/Remove programs > avast! antivirus > Remove. Then choose Repair function in the popup window (Repair).
If this does not help, can you uninstall / boot / install / boot again?

Do you use a firewall? Which one?
Any other security program that could interfere?