Quick answer
Where the black screen appears matters. A program that never reaches its menu needs different checks from a session that freezes while loading an existing checkpoint.
Update and retry the same scene
PC patch 1.1.2, released October 23, addresses checkpoint-loading black screens and parts of the world failing to load. Install the update, then retry the affected scene. The patch does not mean every black screen has the same cause.
The menu opens, but the checkpoint does not
- Return to the main menu.
- Choose change → start new journey.
- Have the host select the nearest checkpoint from your existing progress.
- Confirm the intended checkpoint with your partner, then start.
You may need to repeat unsaved actions within that section. Once loaded, check that the world appears correctly and both players can move and interact.
Black screen at startup
Check the supported PC requirements, selected dedicated GPU, graphics driver and Steam file integrity. Integrated graphics are not supported. Windows N players missing video components should check the appropriate Media Feature Pack.
For the actual Safe Mode (DX11) launch choice and -force-d3d11 parameter, follow the PC launch guide.
Still blocked?
Keep your saves. Send official support the platform, build, checkpoint, error text, GPU and driver, and whether it is startup or checkpoint loading that fails.