Thanks for that info from the French Forum, I’ve had a look at the discussion and must admit I’m totally unfamiliar with the Outlook Plug-in for Avast – didn’t even know it existed and at present wouldn’t know where to find it - so will need to investigate further. It would appear from reading this particular discussion on the French Forum that there is certainly a problem with Avast causing quite a few different ‘ False Positives’ and I think the ball is firmly in their court on this particular aspect of the problem. I have been using PC’s since they first became available to the general public and can’t ever recall a ‘real virus’ entering my PC, I’ve only ever had False Positives and always been able to deal with them by releasing from quarantine, and I started using Outlook Express, then Windows live mail, then Outlook stand-alone and now Outlook 365 so it’s strange that this problem has suddenly reared it’s head, a shame when I’ve used Avast for as long as I can remember and always recommended to friends and colleagues.