How to Fix Roblox Error Code 901 Authentication Fast

If you're staring at your screen wondering how to fix roblox error code 901 authentication, you're definitely not the only one dealing with this headache. It usually pops up right when you're ready to jump into a game with friends, effectively locking you out with a vague message about an authentication error. Most of the time, this specific bug hits folks playing on Xbox, but it can occasionally creep up elsewhere too. It's basically a fancy way of the server saying it doesn't recognize who you are or your account handshake failed. ...

February 8, 2026 · 6 min · Majbritt Aletia