SAME PROBLEM: I just bought my License for Avast, and all icons from taskbar is gone and will not come back except my volume / hardware icon. The rest of my startup icons are not there and will not come back since I installed AVAST. I had NOD32 for 2 yrs never did this, had Zonealarm Antivirus on here didn’t do this, IBOT Malware didn’t cause this but when I installed and paid for AVAST it started doing this and I did the behavior thing to and that didn’t help now how am I to get them to show back up???