Roblox error code 277 means that the Roblox client has lost connection to the game server. this problem can happen on all platforms such as Mobile, Windows 10, Xbox and Playstation.

Here's how to fix Roblox error code 277 (Disconnection Error) and 901 (Authentication Error) on Windows 11/10 PC or Xbox One.

Last Resort: Windows Reinstall: A clean install of Windows is a drastic step, but it’s sometimes necessary to resolve persistent software conflicts. Back up your important data before doing this!

The problem can also be only related to the web version of Roblox, which is a common thing. So, in this situation, you can use the Microsoft version. To do so, first of all, uninstall Roblox from ...