Anytime you see the “HTTP 500: “Internal Server Error” message in Roblox, you’re either trying to publish your game or make changes to it on the backend.

How To Fix Roblox Internal Server Error 500 | NEW & Updated in 2025 ...

To fix Roblox start error, you need to Reset your Router, Reset the TCP-IP with Nesh, Disable proxy settings, Turn off antivirus Software, Allow Roblox through Firewall or Reinstall Roblox.