Game will not start since cross play update. I can start game. Then login in both controllers. Start Borderlands 3. Loading bar shows progress.Then select play. Then select split screen. Then select continue. Sanctuary is on the tv screen. Children of the vault emblem in lower right corner spins. Looks like borderlands 3 will start. Then TV screen goes blank. Borderlands 3 never starts. Xbox turns off after a few minutes.
I believe both accounts would need to be on the same matchmaking system (XBox or SHIFT) to do split-screen? You may need to load each one up solo and check that this is the case. If that isn’t the solution, there’s a link to 2K support in the pinned thread at the top of this section.