Roblox: Error Code 277

Error Code 277 is a commonly reported error in Roblox. First check whether it is a server-side outage; if the service is up, follow the guides below.

Guides covering this error

Fix Roblox Error Code 277 and 279 server disconnects on Windows 11 and mobile by clearing the local RakNet cache and opening UDP ports 49152-65535.