Same problem but there is a workaround which works most of the time. Click the gears, Show in Explorer, Open CoD Modern Warfare folder, scroll to ModernWarefare application (NOT Launcher), right click, run as administrator. Works about 80% of the time. The other 20% of the time it launches and produces another error.
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same for me. get the error when trying to boot through battle.net, go to the folder and launch the app through there (as admin) and it’ll last maybe 60-90 seconds before closing… no error, no warning, no anything … definitely a blizzard issue they’re not owning up to
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I’ve been having the same problem for over a month, and I’m not finding anything that can help with it. The game is a joke with us.
until when will they leave us in a vacuum
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Didn’t work for me either. I have had this issue for about a month now.
might be time to look into class actions if they are just going to ignore us we paid for a product and they are not delivering any aspect of whats been purchased
are you guys planning to fix this anytime this year?
U guys got same issue like alot of us that u get the message content get loaded at the front desktop app page?.
This fixed it for me:
- Rename Modern Warfare (Warzone) folder
- Close Battle.net
- Download Battle.net App from here: Battle.net App – Blizzard Entertainment
- Install it again (do not uninstall, just let it update)
- Once finished, it will open up
- Relocate the game, let it update
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BLZBNTBNA00000012
This is the code i am receiving when i try to start Warzone. Yesterday i played it just fine. Today tried to get on and it keeps giving me this code. I have scanned and repaired the game multiple times. I have also tried deleting Warzone completely off my pc and reinstalled it and it still gives me this code. Help
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have been having this same issue for a couple of months now… I have tried uninstalling/re-installing many times, even battle.net and no fix. scanning files doesn’t work either. Any help appreciated
i am having the same code an issue
estoy tal cual en la misma situacion donde podremos encontrar ayuda???
Same issue. CodMW won’t run after repair or reinstall. Same code.
Have the same issue, but can play warzone when I open the ModernWarfare application in Program files(x86)->Call of Duty Modern Warfare->ModernWarfare. Hopefully this helps.
ayuda de un momento a otro tengo el mismo error, eh echo de todo y creo q ya nada funciona 
currently having this issue, was there a resolution?
Hello I have a little problem launching the game here is the error message BLZBNTBNA00000012
Same here, I am having the same error. I have even reinstalled the game and get the same result…
I just found a solution, closing the bnet app, renaming the folder where is Warzone installed. Start again the bnet app. And locate manually the folder of warzone that you just renamed. Then you can play again… a bit silly but it works. I hope you can get it back to work
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it worked for me thanks a lot