This is a problems that appears to be occurring more and more often. Not sure what to do about it. Restarting the service seems to work 95% of the time. I'm running Windows 7 Home Edition with a Core I5 2500 CPU and a SSD hard drive as the boot device. It appears to me that Avast is checking for the UI service before it's actually activated. Has anyone come up with a FIX for this annoyance. If memory serves me correctly this problem has only been happening for about 5 or 6 months. I'm running Avast version 18.5.2342.