Malware bytes. Do a scan.
It's a new computer.This is not related to any malware.
Have you port forwarded the correct ports?
Sometimes antivirus messes with firewall settings. If you have it, check to see if your program is driving the firewall system, and edit it through the antivirus program.
that's possible! I'm using Avast, do you know how I can do this?
I'm afraid I don't, sorry. I'm sure a quick google search will help.
Completely close Avast, then try.Or turn off all of it's functions, one of them is probably blocking you
where do I go to do this? I have never actively forgeted around with antiviruses before.
Must be your computer, maybe you installed the networking drivers wrong or something