Error Code: BLZ51901016

Support Technical Support
1

I just renewed my subscription yesterday and am having problems logging into BFA, although I am able to log into Classic.

Error Code: BLZ51901016

I have tried:

  1. Ensure that your computer meets the minimum system requirements for the game.

  2. [Update your drivers and operating system] to resolve any compatibility issues.

  3. [Reset your user interface] to make sure your files and addons are not corrupted.

  4. [Reset your network devices] to make sure your router hasn’t become flooded with data.

  5. If you’re using a wireless connection to rule out a connection issue.

  6. [Close all other applications] to resolve software conflicts and free up resources.

I have also tried uninstalling and reinstalling the game, aswell as factory reset on my router.

and deleted wtf/cache/interface folders

also ipconfig /release /renew /flushdns

I also read through:

Nothing there seemed to solve my problem.

Any help would be appreciated.

2

Frankz,

Usually when I see that error code, the first two steps are the solution. If your PC meets the system requirements for WoW BFA and you’re still having trouble after this troubleshooting, please generate a text copy of your DxDiag using these instructions. Once you have that made, open the file. Copy the code below, then copy/paste everything from that DXDiag file between the rows of tilde (~) marks where it says “DXDiag goes here.”

~~~~
DXDiag goes here
~~~~

If the file’s too large to submit, you can upload it to a file hosting site like pastebin and post the link in the code above instead.

3

DX DIAG

https://pastebin.com/ZFNGYf2v

WINMTR

https://pastebin.com/4VjN6mJU
4

Hey there,

Based on the winMTR, it looks like there may be a problem with the linux router/modem device. Latency is climbing to 2000+ before it even goes to the ISP. Is there a way to bypass this device and connect directly to the modem, or is this the only available modem? Have we already tried a power cycle or factory reset on these devices?

DxDiag looks mostly fine. I do see a few errors with the Nvidia profile but nothing major enough to cause anything like this. I think our problem is rooted within the networking devices in the home.

Hope the info helps. Let us know how things go!

5

Hello, I was able to finally login after a friend suggested

Network and Internet Settings —> Network Reset

This seemed to solved my issue with connecting to BFA.

I am noticing some choppy/laggy gameplay at times. I have tried two Ethernet cords they weren’t even recognized. I tried factory reset on the modem, it is 1 device only and must be used for internet.

Maybe I need to contact ISP for a new modem, how can I check if it is damaged/ having errors?

6

Hey, Frankz! Glad to hear there’s been progress after the network reset! The network reset should have reset both the winsock and TCP/IP, but let’s give it the manual try.

  1. Right click on your Windows Start Menu, and select “Command Prompt (Admin)” or just search for Command Prompt and right click, run as administrator.
  2. Now type in or copy and paste, “netsh int ip reset” Press Enter.
  3. Then do the same for “netsh winsock reset”
    Once it’s complete, you’ll need to restart the computer to complete the reset.

With the performance issues, have you tried a factory reset on the router/modem yet? If a factory reset and the suggestions above have been done, it is optimal to address the issue with the internet provider. Our support is very limited for router/modem devices as there are many different models. It depends on the device for the location, but there should be logs that can be checked for any major issues. If you are unsure where the logs can be checked, the router manufacturer’s manual or if the modem was provided by the internet provider, they can help with the issue further :slight_smile:

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