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Roblox Error Codes Diagnostic & Troubleshooting Database
Canonical index of verified Roblox client and server error codes. Every error record contains exact log signatures, server-side versus client-side fault classification, and tested command-line resolution procedures.
Roblox Error Code Triage & Resolution Resolver
Enter an error number (e.g. 279, 267, 403, 529) or error text to verify server vs. client fault instantly.
“Failed to connect to the Game. (ID=17: Connection attempt failed.)”
Local network or firewall dropping UDP packets between client and Roblox game server before handshake completion.
“You were kicked from this game: [Custom Developer Message]”
Custom server-side anti-exploit or whitelist script executing Player:Kick() due to account age restriction, VPN detection, or suspicious movement delta.
“An error was encountered while connecting to the game (Error Code: 403 / Access Denied).”
Hyperion Anti-Cheat flagging conflicting hooking DLLs or invalid authorization cookies stored in local Windows AppData.
“We are experiencing technical difficulties. Please try again later. (Error Code: 529)”
Roblox master database or matchmaking web server experiencing high concurrency degradation or outage.
“Please check your internet connection and try again. (Error Code: 277)”
Local packet drop exceeding timeout threshold leading to socket severance.
“Your version of Roblox is out of date. Please update Roblox to continue.”
Client build outdated compared to master server deployment.
Browse All Verified Error Codes by Category
Network & Disconnect
5 verified codes“Failed to connect to the Game. (ID=17: Connection attempt failed.)”
Roblox Error Code 279 (ID=17) is a client-side network timeout caused by blocked UDP game ports (49152–65535), aggressive third-party firewall/antivirus rules, or corrupted DNS cache. It can be resolved in under 2 minutes by flushing DNS and disabling conflicting VPNs.
“Please check your internet connection and try again. (Error Code: 277)”
Roblox Error Code 277 occurs when the game client loses server heartbeat packets for over 12 seconds due to Wi-Fi packet drops, router MTU mismatch, or temporary ISP routing hiccups.
“Error receiving data. Please reconnect. (Error Code: 260)”
Roblox Error Code 260 occurs when the client stops receiving data stream packets from the server due to severe ISP packet loss or network port throttling.
“Teleport failed: Client could not resolve destination. (Error Code: 769)”
Roblox Error Code 769 is a client DNS resolution failure occurring while TeleportService transfers the player to a secondary server.
“A fatal network error occurred. Please reconnect. (Error Code: 600)”
Roblox Error Code 600 is a socket reset error indicating that an intermediary firewall or local router forcibly terminated the active TCP connection.
Anti-Cheat & Hyperion
2 verified codes“An error was encountered while connecting to the game (Error Code: 403 / Access Denied).”
Roblox Error Code 403 on Windows is caused by Byfron/Hyperion anti-tamper blocking background memory injectors, corrupted LocalAppData credentials, or secondary client instances.
“You have been kicked due to unexpected client behavior. (Error Code: 268)”
Roblox Error Code 268 is Byfron's client behavior watchdog kicking players when memory modifications, FPS unlockers with unsafe hook hooks, or registry alterations are detected.
Authentication & Security
9 verified codes“You were kicked from this game: [Custom Developer Message]”
Roblox Error Code 267 is triggered when a developer's in-game Luau script executes Player:Kick(). This is NOT a platform-wide ban and is NOT caused by a corrupt Roblox installation.
“You do not have permission to join this game. (Error Code: 524)”
Roblox Error Code 524 is an authorization denial when attempting to enter a private or VIP server without an active friend invitation or privacy settings allowing friends to join.
“Same account launched game from different device. Reconnect if you prefer to use this device. (Error Code: 264)”
Roblox Error Code 264 triggers when the master session manager detects a second client instance starting with the same account ID. If you did not initiate this, someone else has your password.
“Disconnection: You have been disconnected from the game. (Error Code: 273)”
Roblox Error Code 273 indicates you were disconnected because the same account joined another experience or because moderation action was applied to your current session.
“Teleport failed: Destination place is restricted. (Error Code: 773)”
Roblox Error Code 773 occurs when an in-game portal or teleport script attempts to send you to a sub-place that the developer set to inactive, friends-only, or under maintenance.
“The Roblox game you are trying to join is currently not available. (Error Code: 103)”
Roblox Error Code 103 is a console parental control block triggered when an experience's Experience Guidelines age rating (e.g. 13+ or 17+) exceeds the birthday on the console account.
“The user account does not have permission to join this game. (Error Code: 106)”
Roblox Error Code 106 on Xbox occurs when the Xbox Live account settings restrict multiplayer games or cross-play communication.
“Account linking error. Please try again. (Error Code: 901)”
Roblox Error Code 901 occurs on PlayStation or Xbox when your console profile is already permanently linked to a different Roblox username.
“Family settings on this console do not permit this action. (Error Code: 110)”
Roblox Error Code 110 is triggered by Microsoft Family Safety restricting games above a certain content maturity.
Server Outage & HTTP
2 verified codes“We are experiencing technical difficulties. Please try again later. (Error Code: 529)”
Roblox Error Code 529 is a 100% server-side HTTP 500/503 internal server error. No changes to your computer, router, or local game files will resolve it.
“This game has ended. (Error Code: 517)”
Roblox Error Code 517 happens when attempting to join a game server instance that was closed by developer update or server migration while you were connecting.
Client Crash & Memory
2 verified codes“Your version of Roblox is out of date. Please update Roblox to continue.”
Roblox Error Code 280 indicates your client binary version is older than the server protocol. This is usually resolved by running the official launcher or clearing stale installer caches.
“DirectX / Driver initialization failure. (Error Code: 116)”
Roblox Error Code 116 indicates your graphics card driver does not support DirectX 11 Feature Level 11_0 or has corrupted display driver DLLs.