Can't get update through firewall

I’ve been fighting with my firewall for a couple of weeks now and can’t seem to get the automatic updates for the free Comodo Antivirus to go through my firewall.
Comodo AV version
Firewall - Windows Firewall for Windows 7 64 bit.

All of the boxes to allow Comodo are checked to allow it but the only way I can get an update is to temporarily disable the firewall and manually get the definition update.

What kind of rule do I need to put in to allow the updates?

Any suggestions?

Thanks in advance for any advice you can give.