Recently I got Tmobile home internet to replace my Optimum cable internet. It was working fine but for the past few days, I keep getting errors when trying to play any games.
The first error I got was 0x000009D whenever launching a game. I haven’t found a fix for this one, but using a VPN bypasses this one. You can use any VPN. I use a browser-based VPN and play using https://play.geforcenow.com/
I get this error when using a VPN but this one is easy to fix. find the setting called WebRTC Leak Protection or WebRTC Leak block etc. and DISABLE it. This is in your VPN settings somewhere.