Error code blzbntbna00000012

I’ve already uninstalled the game and reinstalled it, I’ve checked and repaired the game, I’ve done everything and nothing, I can’t play the game for a month

Hello:

You don’t specify what game this is for…

If it’s for Warzone, have you checked whether you are running some anti-cheat software such as Riot Vanguard or FaceIt Anti-Cheat Client as suggested in Warzone won't launch at all BLZBNTBNA00000012 - #2 by Boubou-1741 ?