blz51901016 wow error (10 techniques explain)

It is littel bit frustraing when we found error blz51901016 when playing the World of Warcraft (wow) game.

we have found that error is occured because of your system does not match the system requirement for playing the world of warcraft game.

We have explain each and every aspect of this problem what we have understood.

How to solve error blz51901016 in world of wolfcraft

error blz51901016 : check system requirements

Operating System

Wow need windows-64 bit and version varies from windows 7 to windows 10.

Processor is intel core i5 3450 and also works with AMD FX8300

The most important part is nvidia graphics card and minimum requirement is NVIDIA® GeForce® GTX 760 2 GB or AMD Radeon™ RX 560 2 GB or Intel® UHD Graphics 630 (45W TDP) *Requires manufacturer’s driver support.

RAM is minimum 4 GB but better to use 8GB RAM while 1024 x 768 minimum display resolution is required if you are playing on laptop or desktop computer.

Update driver and operating system

Now if you match above requirements then you have to update drivers and operating system

Windows users (error blz51901016 )

if you are windows users and find blz51901016 this error then follow the below steps so you can check whether your devices are working properly or not. if not working properly then you have to update your device drivers by downloading them from manufacturer website.

Steps to check and update device drivers

  1. Press Windows + R.
  2. Type DxDiag and click OK.
Check display drivers and device error blz51901016

Check display drivers and device

After the DirectX Diagnostic Tool loads, click the Display tab.

Check display drivers and device to solve error blz51901016

now in my case no problem is detected. if any problem found then go to Intel graphics website to download drivers.

Check sound drivers and device

now you click on the sound tab will display you the following screen and you have to check your device drivers and device. if not working then you go and get device drivers from the manufacturer websites.

Check sound drivers and device

apart from this two you have to check your input means mouse is working fine and connected properly by visiting the input section of the above dialogue box.

Check sound drivers and device

you can find sound or display or input Intel driver

you can find sound or display or input NVidia driver

you can find sound or display or input AMD driver

Check your addons are not corrupted might cause blz51901016 error

sometimes the game does not open and create the problem in launching due to addons are not working properly.

you can do following steps to lauch the game without any problem.

  1. Completely exit from game and remove all the processes running in task manager of the computer.
  2. Open the World of Warcraft folder.
  3. Then rename the update executable which might causing problem in staring the game by Rename the Cache, Interface, and WTF folders to CacheOld, InterfaceOld, and WTFOld.
  4. Relaunch the game.

Reset your Router and Laptop

  1. Shutdonw the router and laptop so that all the temp and unused files will get clean.
  2. Power off your router and laptop.
  3. remove all cable of power from the router, and wait for a few minutes.
  4. Then start the router again and start your laptop also
  5. Hope this will solve your problem.

Flush the DNS

sometime DNS will create problem in network connection.

open the command prompt and type ipconfig/flushdns

Flush the DNS

check stability of your internet

you can check the internet stabliity by using ping command and use any public ip of other user.

if ping reply all the packets with 100% throughput then your netowkr connection is correct.

check stability of your internet

if you want to use online tool to check intenet stablility then use this link. This will do same task and ping from remote computer to your pc.

Close all other software

Sometimes this problem occur due to conflict of software libraries is also create blz51901016 error. close all other application,games and other software. only open this game now and it will work.

FAQ about World Of Warcraft errors

Apart from this commmon errors we found in world of warcarft.

What is WoW Error 51900319 ?

if you find this error then you should check your internet connectivity by using steps mention above. you can also use google dns to solve this error.

you can slove this problem by DNS flush, Router Reset, Disable the IPV6 and use google dns.

Try out this all and Error 51900319 error will surely solve.

How do I fix WoW lag?

To improve lag in wow then you first check you intenet connection problem and then check game settings. sometimes restart the router and pc will solve the problem because temp files and unused processes will occupy the ram and processor will create the major problem.


We have written down all the solution to solve blz51901016 error in world of wolfcraft for from checking device drivers of sound and display and mic. We have also ask how to check network connection and dns flushing etc. We have also show other solutions to deal with problem.