Google mail activating avast anti-virus
During the last few months, when I log on the Gmail and the Google hangouts are about to be loaded avast reacts mentioning a possible contamination being detected and suggests I run a smart control - which I do and finds no issues and hangouts are not loaded - instead a error 101 occurs. Other gmail accounts without contacts do not activate the avast.
I run windows 8.1 and the most recent Firefox and I have ran Malware Bytes which also found nothing.
Any ideas will be most welcome.