I just finished building my new PC and installed Insurgency Sandstorm. Ever time I join a server, I get kicked pretty much instantly with the error message: "Kicked from server: Steam authentication failed" I have tried everything including;
- Steam: flushed cache, reinstalled
- Uninstalled and reinstalled game
- Checked if files are corrupted (verified game integrity)
- It's not my firewall (ran machine on DMZ, disabled firewall)
- It's not any antivirus or security settings (none present but Windows Defender on test machine, disabled it)
- Connection is fine (every other game, including others on Steam and using EAC work fine)
Nothing has solved the issue. Any help would be greatly appreciated!