How do I set up avast free 2014 with Thunderbird mail client?

Hi folks,

Having used live mail to view my different email accounts and having probs with it, I installed Thunderbird instead, but I am getting security errors on it which I believe emulate from avast free 2014. I understand that some settings have to change in avast to enable Thunderbird to function correctly.

I wonder has anyone done this and if possible the easiest way to set up avast to correct the problem?

Many thanks
Joe

http://www.avast.com/faq.php?article=AVKB91