Fix World of Warcraft Error 51900101

Prasiddh Thakkar
4 Min Read

World of Warcraft of WoW was released back in 2004. It is classic and one of the long-running massively multiplayer online role-playing games by Blizzard Entertainment. However, like any other online game, WoW also has various bugs and errors like character loading issues, retrieving character list errors, and character not found, among others.

Lately, many players are reporting that they are running into an error 51900101. When this error triggers, the game disconnects players from the servers and prevents them from maintaining a stable connection. If the same error is troubling you to play World of Warcraft, then check out this guide.

Fix World of Warcraft Error 51900101

There are multiple reasons why you are receiving error code 51900101 in World of Warcraft such as:

– Server down

– Corrupted cache files

– A poor or unstable internet connection

– Your Firewall program

Thankfully, in this guide, we have covered all potential methods to fix this error.

1. Check the Server Status

The very first thing you need to check is to make sure the server is not down. Click here to know the current server status. In case the server is down due to any reason, the error will be eliminated automatically once the services are back online.

2. Delete your Cache Folder in WoW

The next and quick method to fix this error is to delete your cache folder in WoW.

– Go to the folder where the game is installed on your PC

– Select the “_classic_” folder 

– Delete the Cache folder

– Once done, relaunch the game

3. Check Your Internet Connection

The next best method is to make sure your internet connection is up and fast because a poor and unstable connection can also trigger error code 51900101 in World of Warcraft. To troubleshoot your internet connection-related issues, try using another WiFi connection if available or switching your connection from WiFi to Wired and then check if the error persists.

4. Change DNS Settings

One of the classic and easiest methods to fix error code 51900101 in World of Warcraft is to change the default DNS server to Google DNS. Here are the steps to do this:

– Press the Windows key + X, then click on Control Panel

– Click on Network and Sharing Center

– Click on Change adapter settings

– Right-click on your network adapter and click on Properties

– Select Internet Protocol Version 4 (TCP/IPv4) and click on Properties

– Select Use the following DNS server addresses and enter as the preferred DNS server and as the alternate DNS server

– Click Ok to save the changes

5. Allow the Game in Windows Firewall Settings

In case you have not allowed the WoW in your Firewall settings, the error might appear. Here is how to allow the game in your Firewall settings.

– Press the Windows key + X and click on Control Panel

– Click on Windows Defender Firewall

– Click on Allow an app or feature through Windows Defender Firewall

– Click on Change settings

– Find World of Warcraft in the list and make sure it is allowed for both private and public networks

 And that’s all for this guide and these are the best methods to fix World of Warcraft error 51900101.

Read next: How to fix World of Warcraft Blizzard BLZ51903006 error.

Share This Article
I am a trainee at QM Games.
Leave a comment