Fix Roblox Error Code 277 Connection Lost

By Zennith Tech Lab • Published 2026-05-22 •
RobloxGamingDNSInternet

Solve Roblox error code 277 by deleting temporary Roblox cache files and switching to public Google DNS servers.

Instant Connection Repair

To fix Roblox error code 277, clear your browser caches and delete local temporary logs from the system AppData folder.

# Step 1: Clear Roblox Temporary App Cache

Broken log segments of past game sessions cause the engine to disconnect unexpectedly: 1. Press Win + R keys on your keyboard. 2. In the box, type %localappdata%\Roblox and hit OK. 3. Select all items (including the Logs folder), force delete them, and reboot Web interfaces.

# Step 2: Adjust DNS Routing Variables

Mismatched resolution tables from local ISPs block Roblox sockets: 1. Click Start > Search Control Panel and open it. 2. Navigate to Network and Internet > Network and Sharing Center > Change adapter settings. 3. Right-click your active connection card, and select Properties. 4. Double-click Internet Protocol Version 4 (TCP/IPv4). 5. Choose Use the following DNS server addresses and configure: Preferred: 8.8.8.8 Alternate: 8.8.4.4 6. Click OK on both windows to refresh settings.