James, Have a look @ this similar link (https://support.avg.com/answers?id=906b0000000D3m2).
AVG Guru
How do I stop the pop up message from AVG "can not scan encripted messages"?
James, Have a look @ this similar link (https://support.avg.com/answers?id=906b0000000D3m2).
AVG Guru
AVG Guru