I have Avast Free 17.5.2302 (build 17.5.3559.0) on Windows 7 Home Premium SP1.
After booting the Behaviour Shield turns itself off and must be manually restarted.
Looking in this forum I found two solutions: Repairing and/or Clean Install.
Both solutions doesn't work.
So everytime I must check .
Is there an other solution for solving this problem?