How to Fix Roblox Error Code 277 (Lost Connection to the Game Server)

Quick Fix

Error 277 is almost always a connection stability issue, not a broken account. Try this first:

1. Restart your router (unplug 30 seconds, plug back in) and, if possible, switch from Wi-Fi to a wired Ethernet connection.
2. Turn off any VPN and temporarily disable antivirus/firewall web protection, then relaunch Roblox and rejoin the game.
3. Check the Roblox status page to rule out a server-side outage before troubleshooting further.

Step-by-Step Guide

What this error means

Roblox Error Code 277 means 'Lost connection to the game server, please reconnect'. It happens after you have already joined an experience — you were playing, then got suddenly disconnected. According to Roblox Support, error code 277 occurs when the client application servers fail to establish a network connection on PCs, Macs, or mobile devices.

Unlike error 279 (which blocks you from joining in the first place), error 277 specifically means a disconnect after entering the game. The most common root causes are unstable Wi-Fi, packet loss, firewall restrictions, VPN interference, overloaded servers, corrupted local files, or a specific experience that is not running properly. It's worth noting this can happen even with a fast connection, because error 277 troubleshooting should focus on stability, not just raw speed — a fast but unstable connection can still disconnect you.

Fix 1: Rule out a Roblox server-side outage

1. Check the Roblox status page. Visit the official Roblox status site to see if you'll see the 'All Systems Operational' message.
2. Look for maintenance or outage notices. Sometimes the issue might be with Roblox servers, which can experience temporary outages or maintenance periods.
3. Wait it out if servers are down. Roblox usually resolves server issues within 30 minutes to a few hours. There is nothing you can do on your end in this case.

Fix 2: Stabilize your network connection

1. Restart your router. Turn off your router and wait a few seconds, then turn it back on and let the connection establish — this can help fix any issues with your router's cache that might be causing the error.
2. Switch from Wi-Fi to Ethernet if possible. One tester found that switching from WiFi to Ethernet reduced error 277 occurrences by about 60%. If you must use Wi-Fi, plug a LAN cable into your router if you can, since a wired connection is much more stable than WiFi.
3. Move closer to your router or check signal strength. A weak Wi-Fi signal is a very common trigger for this error.
4. Test on a different network. Some users have reported encountering Error Code 277 when using a specific network, but the error disappears when they switch to a different network, such as mobile data — switching to another network can potentially resolve the issue if your current network is not stable.
5. Close bandwidth-heavy background apps. Streaming Netflix, downloading torrents, or updating Steam in the background can consume a lot of bandwidth and leave Roblox with no room.

Fix 3: Remove software that's interfering with the connection

1. Disable your VPN. Free VPNs are often unstable and cause sudden disconnects — turn off your VPN if error 277 appears frequently, and try playing without a VPN as a test.
2. Allow Roblox through your firewall and router. Security software often controls which programs can access the internet and may block apps by default. On Windows, go to Settings > Privacy & Security > Windows Security > Firewall & network protection > Allow an app, and add Roblox if it's missing.
3. Temporarily disable third-party antivirus web protection. Antivirus software with real-time scanning sometimes flags Roblox activity as suspicious and blocks the connection mid-session, and this happens more often with third-party antivirus software like Bitdefender, Kaspersky, and free versions of Avast.
4. Disable browser extensions (browser/Roblox web player only). Ad blockers and privacy tools can interfere with the connection; turn them off or whitelist Roblox.

Fix 4: Clear corrupted Roblox logs and DNS cache

1. Delete Roblox log files (Windows). Press Win + R, type %localappdata%Robloxlogs, press Enter, select all files, and permanently delete them. Also clear %USERPROFILE%AppDataLocalLowRbxLogs. These logs store your game history and settings, and they can get corrupt and cause errors. Roblox will regenerate fresh logs automatically.
2. Flush your DNS cache (Windows). Open Command Prompt and run ipconfig /flushdns. If your DNS cache is corrupt, it can prevent you from connecting to Roblox servers.
3. Flush DNS on Mac. Open Terminal and run sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder for newer macOS versions.

Fix 5: Update or reinstall Roblox and your OS

1. Update Roblox. An outdated client can cause connection errors; check for updates and relaunch.
2. Update your operating system and network/Wi-Fi drivers. On Windows, use Device Manager > Network Adapters > right-click your adapter > Update Driver.
3. Uninstall and reinstall Roblox. This is recommended by Roblox Support itself: try uninstalling & reinstalling the Roblox application, which helps clear any corrupted files and data that may affect the functionality of the application.
4. Try compatibility mode (Windows). Right-click the Roblox Player shortcut > Properties > Compatibility tab > check 'Run this program in compatibility mode for Windows 10.'

Fix 6: Platform-specific steps

1. Mobile (iOS/Android): Force-close and reopen the app, toggle airplane mode on/off, check for a Roblox app update in the Play Store or App Store, and lower in-game graphics quality so your device doesn't lag and get treated as a dropped connection by the server.
2. Xbox/PlayStation: Restart the console, verify the network connection in console settings, and check for a Roblox app update.
3. Chromebook: Update ChromeOS, force-close the Roblox process from the browser task manager, and restart the device.
4. Windows via Microsoft Store: Try Settings > Apps > Apps & Features > Roblox > Advanced Options > Reset or Repair, and run the Microsoft Store apps troubleshooter under Settings > Update & Security > Troubleshoot.

Fix 7: When it's not something you can fix locally

1. Test if only one specific experience disconnects you. If error 277 only happens in one game but others work fine, the problem is likely with that experience's server or scripts, not your device — a bad experience can fail because of scripts or too many objects, and only the experience creator can repair that kind of problem, so you cannot fix a broken experience from your router settings.
2. Contact your ISP if speed tests show persistent packet loss or high ping across all networks and devices you try.
3. Contact Roblox Support directly if the error persists across multiple devices, networks, and after all the above steps — this may indicate an account-specific server-side issue that needs their help.