Outlook 2010 and 2013 also auto disable the mail add-in for outlook. We updated 4 different computers, every computer now has disabled the add-in. Multi attempts to re-enable the add in in outlook caused outlook crash. I called Avast pro support, they act as if they know nothing about it, start suggesting windows restore points and other ridiculous crap. ... Sorry, i am just ticked off that they always act like the issue is on our end, even when patently obvious the issue is with the update.