To fix An error occurred while starting Roblox Studio, Studio details failed to create key or deploy, Reset your Router, Reset TCP-IP, Disable proxy settings, etc.

Fix #3: Update Roblox installation files. If Roblox is still showing the same crash error, the final solution that you can try is to update certain files in the installation folder.

How to fix Roblox 266 error code Here are some of the possible solutions for the Roblox error code 266 that you can try to fix the problem on your end.

Running through some trouble while playing Roblox and getting error codes? Here's what they mean and how to fix them during The Hunt.