system
2
It’s a system driver conflict.
Before installing Avast v7 or v8 (or current v9 I suppose as well) on a computer using the firewall, you need to, in the firewall GUI disable HIPS. But that’s not sufficient. You then need to disable the system driver sbhips (or kbhips if one of the early version 4 firewall) like this
1. Go to Start -> Run; type cmd and press enter
2. At the command prompt, type the following and press enter:
sc config sbhips start= disabled
3. After seeing the SUCCESS message, exit cmd and restart the computer.
This is necessary even if you disable behavior shield during a custom installation of Avast.