BLZBNTAGT00000841 and constant stuck at update loop

[MikNik-2324]

Everything was ok until 2 days ago when I was starting to constantly get the error BLZBNTAGT00000841 and updating games become a nightmare. Im stuck at “waiting for another update”, “initializiting”. There was no change on my PC no new installed programs. The problem sometimes is getting away and I am able to update games and play. The problem is PC related, on another PC in the same network everything is ok.
This is what i do trying to fix this problem:

• Reinstall app
• Flush DNS
• Remove folder in ProgramData
• Clear Register related to App
• Try to run in save mode with only Battle.net launched
• Run System Selective with only Battle.net app
• Create another user on PC
• Temporary removing FireWall on PC and Router
• Resetting network connection

Nothing helped, and i think the only suggested fix for that error that is left is reinstalling the system, but its out of the possibility, right now.

[LolNoPhones-1614]

Real and fair though

[Syban-11892]

I had same exact issue - Uninstalled everything and now the Battle.net app is stuck at 50% updating.

[Kershew]

Try doing an extended power cycle on your system. Turn off all devices including the modem. Wait 30 minutes, turn on the modem, wait 5 minutes, turn on any network devices, wait 2 minutes, turn on your computer and try the game.

You can try switching your DNS settings to use a free public DNS servers instead of your ISPs Servers:

The Best Free and Public DNS Servers (January 2023)

We do not have individual steps for specific modems or routers so if you need assistance accessing or updating the devices, contact the device maker/provider.

Sometimes firewall or routing software/hardware will have some advanced settings to prioritize and manage types of network traffic. Normally that is not an issue but we have seen situations where it can interfere with the delivery of the data for our games/voice chat.

Let’s try turning off these features:

QoS
SIP ALG
RoG (ASUS Routers Only)
Security firewalls (Some ISP provided modems)

Not all devices will have these options and the steps for turning these functions off will be different depending on the make/model/software version of the devices and programs involved. If necessary look at the documentation for your security and routing products to find out how to turn these options off.

In some cases there is a corrupt or misconfigured setting within the router or modem. We cannot say what that might be offhand but the easiest way to resolve these conflicts would be to factory reset the router and/or modem.

You may need to look up your specific model for the steps on how to do this and in some rare cases you may need to have this done by the ISP. Feel free to reach out to them for assistance if necessary.

Let’s manually clear the Battlenet Desktop Application and all supporting data from the system. This will not remove existing game clients.

1. Open file explorer/file manager (Right Click Windows Start)
2. Navigate to the folder where the desktop application would normally be installed. Delete that folder if it exists (usually program files x86)
3. Type the following into the address bar (not the search bar): %APPDATA% and press enter.
4. Delete the Bnet and blizzard folders inside the appdata folder if they exist.
5. Repeat steps 3 and 4 with %PROGRAMDATA% %LOCALAPPDATA% and %TEMP%
6. Empty the recycle bin.
7. Now reinstall the app to the C: Drive.

Try running your system in selective startup mode: https://battle.net/support/article/200483

Create a new administrator account: Creating a New Administrator Account - Blizzard Support

Once the account is created, shut down the computer, wait 60 seconds, restart, log into the new profile and try the app/client.

If that does not solve the issue, then I recommend using the support button (then contact support button) at the top of this page to submit a ticket. Please make sure to include the requested system files with your ticket submission.