Run the Official-Map Isolation Test
Create a new private room on a standard official map with Workshop content disabled. Use the same host, guest, game version, and network.
| Result | Next conclusion |
|---|---|
| Official map works | Investigate the Workshop item, its download state, map version, host setup, or MOD compatibility. |
| Official map fails too | Check game version, EOS status, cloud sign-in, room discovery, or local PC/network state. |
| Host loads, guest fails | Compare the guest's version and Workshop state; the host loading does not prove the shared room is ready. |