Firefox Nightly "Server not found"

I recently updated Comodo AntiVirus and noticed that whenever i try to use Firefox Nightly I’m unable to connect to any site. Instantly, this message pops up whenever i try to load a page:

"Server not found

Firefox can’t find the server at

Check the address for typing errors such as instead of
If you are unable to load any pages, check your computer's network connection.
If your computer or network is protected by a firewall or proxy, make sure that Nightly is permitted to access the Web."

So i try to use Google Chrome instead, which works without a problem as usual. Because, in my experience, Comodo Antivirus have always been a bit overprotective and restricted things on my computer that other antivirus softwares i have tried haven’t, I immediately blamed Comodo Antivirus. So I shut down every process related to Comodo and just like magic, Firefox Nightly was able to connect to the internet again.

So does anyone know how i can use Firefox Nightly without needing to shut down Comodo Antivirus every time?

There’s this nifty thing in Comodo called a log viewer, you might consider checking it first and looking for references to Firefox to see what actions are being being blocked. Otherwise your asking for shoot in the dark solutions to a specific user environment i.e. beta builds.