Call of Duty: Black Ops 6 has arrived, but unfortunately, it's not without its hiccups. A frustrating issue preventing players from joining friends is the "Join Failed Because You Are on a Different Version" error. Let's get you back in the game with your squad!
How to Fix the Black Ops 6 "Join Failed Because You Are on a Different Version" Error

This error usually means your game isn't updated to the latest version. The first step is to head back to the main menu and let the game update. However, some players report this doesn't always resolve the problem.
If the error persists after updating, try restarting the game. This forces a fresh update check, potentially resolving the issue. While it means a brief delay in rejoining your friends, it's a small price to pay for getting back into the action.
Related: How To Unlock the Dragon’s Breath Shotgun Attachment in Black Ops 6 (BO6)
If restarting still doesn't work, there's one more trick to try. In my experience, searching for a match while the error appeared allowed my friend to join my party. It might take a few attempts of backing out, but persistence often pays off.
That's it! Hopefully, these steps have helped you fix the Black Ops 6 "Join Failed Because You Are on a Different Version" error.
Call of Duty: Black Ops 6 and Warzone are available now on PlayStation, Xbox, and PC.