error to connect in black ops 2 online

[Mitix88]

i can't connect to bo2 online, i see only an infinite loading screen and at the end "call of duty black ops 2 server is not avaible" i don't know what to do.

[Dss0]

Mitix88 try:

• changing your dns servers (https://www.windowscentral.com/how-change-your-pcs-dns-settings-windows-10)
• forwarding port 3074 (https://www.lifewire.com/how-to-port-forward-4163829)