Hi bizzeb, sorry if it took me a little while to respond, not feeling so well tonight.
Anyway, can you see if you're able to Restore the Windows Firewall back to the default setting?
Any type of configurations that you have done will be lost.
Restore Windows Firewall settings
Also, is your Avast an Anti-Virus or a Security Software?
Let's uninstall Avast for now and leave MSE and SuperAntiSpyware, I agree that you're not suppose to have diff AV or Security Software running. Please use
this Utility Tool to uninstall Avast completely.