How To Fix DCUO Authentication Error 0x0121?

Published on: , by

Ai Disclaimer: We don't use AI for content or research. The contents is researched and written by our team.

» Home » Error Codes » Games » How To Fix DCUO Authentication Error 0x0121?
DCUO Authentication Error 0x0121

DCUO Authentication Error 0x0121 mainly occurs when users try to log in to the game on the console but they receive this error.

If you are also dealing with this error then in this -post we are going to provide some possible workarounds to fix the Authentication Error 0x0121.

How To Fix Authentication Error 0x0121?

Fix 1: Check For Service Status

During our research, we have found that for most of the users this error resolves itself after a few hours which indicates that this error is coming from the Xbox or game end.

So we will recommend you to check Xbox/Playstation service status and game server status.

Check if there is any outrage or maintenance with the Xbox/Playstation or with the game. If yes then wait for a few hours and then try again.

Fix 2: Clear Persistent Storage For Xbox

  • Tap the Xbox button on your controller.
  • Then visit Settings.
  • Choose Devices and Connections.
  • Then choose the Blu-Ray option.
  • Now select the Persistent Storage option.
  • Tap Clear.
  • Now check if now you can log in to the game.

Fix 3: Try Other General Solutions

  • Make sure your Xbox/Playstation or the game has not any pending updates.
  • You can also try resetting your Xbox and Modem/Router.

Note: In case you continue to get the error then we will suggest you contact the game and your console support.

Like This Post? Checkout More

Photo of author
Rahul Choudhary is a technology and troubleshooting expert. He gives his expert opinion on different technology trends and provides troubleshooting guides for different apps, websites, & consumer hardware products. He graduated in BA English Honours from the University Of Delhi, and later he learned HTML and WordPress. He also did a certificate course in Hardware and Network Troubleshooting , and a certificate course in Computer Architecture.