
Players of Magic The Gathering (MTG) Arena are receiving an unable to login- Authentication Failed error in-game and are looking for a fix to this issue. This is causing them to have problems with the game servers which in turn results in trouble during log-in. In this guide, we’ve listed out a set of fixes for MTG Arena players!
How to Fix the Unable To Login Authentication Failed Error in MTG Arena?

To put an end to your problems, we’ve listed a few methods. The following steps should help you solve the aforementioned error in-game:
- Launch Control Panel
- Select system and security and then click on Windows firewall.
- Locate the option Turn Windows Firewall On or Off.
- Hit the option Turn Off Windows Firewall (Not Recommended).
- Select OK.
- Close the window and launch MTG Arena. Your game should function properly now, but in case you are still unable to login- follow the next fix.
Once done, uninstall the game and reinstall it– this time it shouldn’t have any connection or login issues.
These should pretty much spell the end of your problems with the authentication failed error in Magic The Gathering Arena. We hope this guide was of help to you. If you face additional issues in-game, be sure to check out this guide that helps you with fixes for MTG Arena!
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