It started yesterday, when after doing timewalking dungeon i wanted to quickly teleport to pandaria via wormhole generator. Since then loading screen fully loads and this error i get all the time. After i close the game, and try to turn it back on again i get “your installation is damaged” error, then battle net launcher starts scanning then another error “something went wrong BLZBNTAGT00000BB8” then update button pops up, the game updates. And thats the whole loop 
Deleting folders, clearing caches didnt helped at all. Like honestly need some serious help here. I cant play and time on my sub is ticking
Hey Amazinhorse,
Thanks for providing the errorcode you’re receiving! This error would refer more to an issue with your computer or connection, and I’d recommend you follow these troubleshooting steps to help resolve this so you can download and repair your game client.
Before i posted my problem here, i have already explored this solutions you linked here, unfortunately- they didnt helped.
Wanna point out that classic WoW is working without problem. Dunno if it matter since they are 2 separate beings (i think?) Also no other online game have any issues like this.
PS.
- Dont have any security program, except for default Windows defender.
- Connecting with cable also doesnt fix this.
- Runned scan & fix with no difference to the result.
- Done, nothing changed.