Tiny Tina's Wonderlands 'Internal Error': How to Fix
By Jack O'Dwyer

Players have reported Tiny Tina's Wonderlands throwing an "Internal Error" message when attempting to sign-in.
Tiny Tina's Wonderlands has been plagued with a number of errors since its launch. From issues with the game's servers keeping players out to some not being able to start up the software at all, Borderlands fans have had a rough go of it. No launch is flawless, however, and Gearbox Software is already on the case to fix the problem.
Here's what players can try in the meantime if they encounter an internal error.
We are aware that multiplayer sessions are seeing degraded performance and that players are being disconnected from online sessions. We are working to mitigate the issue to restore online multiplayer functionality.
— SHiFT Status (@SHiFTstatus) March 27, 2022
Keep an eye on @SHiFTstatus for updates.
Tiny Tina's Wonderlands 'Internal Error': How to Fix
This is a simple fix. Generally, when this error appears, it means the game is having difficulty rectifying the players' current presence. Something within the account is conflicting with the current log-in attempt.
Internal Errors can manifest as an inability to log into the game and permanent loading screens upon entering the account credentials. This indicates an issue with the account, itself, and the log-in process rather than with the game or its files. In essence: the game thinks the account is already active and in use somewhere else.
To fix this issue, we recommend mass logging out of every platform that may currently have the corresponding details signed in. Doing so will eliminate any other "active" sessions of the account and resolve the conflict.
If the error persists, we recommend checking out the current state of affairs via Gearbox's verified SHiFT network Twitter account (@SHiFTstatus). If the problem is on the developer side, there's a good chance players will see it somewhere in the account's posts.
Tiny Tina's Wonderlands is available for Microsoft Windows PCs, Xbox One/Series S|X, and PlayStation 4/5.