Nostalrius Begins - Quality wow vanilla realm (1.12)

Greetings. My problem is:
I'm disconneting every 2 minutes.
Before i reach lvl 20 it was all ok. And i cant decide this problem (I'm already opened TCP ports in router etc.)
Windows 10.
I hope u'll answer soon.

This is happening to me as well. Started yesterday.

First, you do not have to have TCP ports open, playing any Private Server does not require ports to be opened, or forwarded, unless you're directly hosting it off your PC.

Have you checked your Windows firewall? Perhaps run as an Administrator? Check your computer for Viruses perhaps? It could be an internet issue, so I would suggest running an internet speed test?

If all else fails delete your WTF folder located in your World of Warcraft folder.

I hope this helps.

My issue appears to be system wide - or router/modem wide - and not specific to WoW.