Updating Battle.net update agent

[Ben-21737]

I got a bug trying to update Diablo 4 so I tried to re-install the battle.net client. Now it’s just stuck on Updating Battle.net update agent and it’s stuck around 50%. I have tried all sorts and NOTHING is working now I can’t play any battle net games because this launcher is buggy as hell, please help!

[XuMonkey-1261]

I have the same issue, anyone could fix it?

[azare-1882]

Same for me. Although mine finally got past that stage and is stuck at “Installing battle.net… (0%)”

[Kershew]

Hey everyone,

Typical causes on getting stuck on installation are permission/security based or something on the system/network interfering with the update agent’s ability to obtain or apply data to the affected client.

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 (July 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.

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

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

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

We need to not only remove all data relating to the Battle.net Desktop Application and affected game client, we need to ensure we have good permissions for reinstall.

1. Ensure the Desktop Application or setup is not running and open File Explorer (Right click Windows Start Button)
2. In File Explorer, 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 7 and 8 with %PROGRAMDATA% %LOCALAPPDATA% and %TEMP%
6. Empty the recycle bin.
7. Create a new administrator account: Blizzard Support - Creating a New Administrator Account
8. Once the account is created, shut down the computer, wait 60 seconds, restart, log into the new profile.
9. Now reinstall the app to the C: Drive.

If that doesn’t solve the issue, then I recommend submitting a ticket with an msinfo attached for further investigation. (instructions for collecting that msinfo report will be on the form.)

Click your name at the top right of this page, click support, click contact support.