My PC suddenly stopped being able to connect to online games, and I'm trying to figure out if this is a PC problem or a network problem.
Everything else on the internet works completely normally:
– Web browsing
– YouTube/streaming
– Discord
– Downloads
– General internet use
But I currently can't connect to ANY online games. This started suddenly after everything was working normally before.
I've tested multiple games from different publishers, and they all have connection/server errors.
The biggest clue is that the exact same PC works normally when I connect it to a different Wi-Fi network. I can immediately play online games on the other network.
I'm using the Xfinity internet/router provided specifically for my apartment.
Things I've already tried:
– Restarting my PC
– Fully restarting/power cycling the router
– Changing DNS to Cloudflare (1.1.1.1 / 1.0.0.1)
– Flushing DNS
– Removing Norton completely
– Checking network connectivity with tracert
– Testing TCP 443 connections to game-related services
The traceroutes to Riot and Ubisoft successfully reached their destinations, and Test-NetConnection to both on TCP port 443 returned True.
So normal connectivity seems fine, but online games don't work.
I also tried accessing the Xfinity app to change/check network settings, but it says:
"Sorry, we couldn't find your user information. We were unable to identify you as a resident of the building."
This makes me think the apartment's internet may be managed separately from a normal residential Xfinity account.
At this point I'm wondering if this could be a NAT/CGNAT, UDP, firewall/filtering, or router/network side issue.
What would you guys recommend testing next? Is there a way I can determine whether the problem is my PC or the apartment's Xfinity network without having to wait for Xfinity support?
Source: r/pcmasterrace · by /u/Confident_Ad_374