1. What is the issue?
DEAR ‘HALO WARS 2’ PLAYER
The game was unable to launch because it could not establish a connection to the revalidation servers.
Please enable your internet connection and then restart the game to play.
after scrolling through the support forums for a while i couldnt really find any useful information. since yesterday i get that message when i try to play halo wars 2 after installing panda security. first it was also blocking teredo and i didnt wanna deal with too complicated things so i just uninstalled it which fixed the blocking of teredo but when i tried to play halo wars 2 i got that message for the first time.
i have done the step by step instructions from the microsoft support to fix connection issues and even chatted with a support (who said the only problem could be problems with the halo wars 2 servers which i kinda doubt). i bought the halo wars 2 ultimate edition with halo wars definitive edtion (which still works for me). i was able to play it just fine till yesterday and i think it might still be connected with panda security even tho i uninstalled it. i also tried turning off the firewall and windows defender but that also did nothing.
2. What platform are you playing on?
Pc windows 10
cpu: i5 2500
gpu: radeon r9 290
ram: 8gb ddr3
direct x 12
windows 10 pro version 1703 64 bit
3. What’s your gamertag?
SmokeyAndPanda
4. What region are you playing from?
Europe, Germany