BLZBNTAGT00000840 error code

Tried everything nothing is helping.

followed https://eu.battle.net/support/en/article/23418 to the point.
It’s a brand new computer just trying to get it set up.

When trying to download wow Cataclysm, and retail it comes up

Something went wrong with a file. We’re not sure what caused it, so please try again or click the code below for more information. Sorry about that.
More help: BLZBNTAGT00000840

Does someone know how to fix this?

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I have exactly the same problem.

1 Like

Same issue /: same problem

I have the same problem. New installation of Windows 11 with Daiblo IV

Same problem here. New PC with the new windows 11. First time battle.net app install was oke. But wow and hs give the same code. Uninstall all. I did what blizz say on another page. Now the code come when i install the app.
But when i click the app it opens. But still i can not install the games wow and hs.

This is the worst update ever. Can’t belive that after so many years you can’t play a game without crashing. I spend so much time to make a PIT or whatever, just to get a crash at the boss. Wonderfull developing.