Most of the time Roblox 277 error code is due to a server problem. That being said, the first thing that you want to do is to make sure that you check the server status of Roblox.

Customize compatibility settings for Roblox. Run Windows built-in Program Compatibility Troubleshooter. 1] Customize compatibility settings for Roblox Here are the steps to change compatibility ...

Basic Reinstall: Uninstall Roblox through your control panel (or Apps settings) and then download and install a fresh copy from the Roblox website. This is your first line of defense.