If the ROBLOX game you are trying to join is currently not available and you see error Code 109, Unable to Join, then see this post.

Learn how to fix the Roblox 106, 110, 116 - Your Xbox account settings prevent you from playing user generated content errors on Xbox One and on Windows 10.

First things first: make sure you’re running the latest version of the Roblox Player. Outdated versions are notorious for causing conflicts. Check the official Roblox website or your platform ...