Hi,
Just a point, the MS Outlook (that technical refered to) is totally different to MS Outlook Express (OE), they are totally different programs (although both by Microsoft (MS) and linked by misleading nameing).
So if you post a problem and say you use Outlook many here will assume you are not using Outlook Express. Because these programs use different avast providers for protection, the suggested solution could be wrong.
This may help in the future.