UE-62267 expansion: FOnlineSubsystemNull can't find LAN sessions on android. Affects the Collab Viewer template

Step to reproduce:

Prerequisite: An android device on wifi, on the same IP subnet as a windows host.

  1. get the collab VR template from the marketplace.
  2. deploy to android
  3. deploy to Windows
  4. Launch collab on windows as server
  5. Launch collab on android device, click join.

Result: No server found. It is still possible to join by entering the server IP.

Expected result: The Windows server should appear in the list.

The same problem can be experienced if both client and server are running android. This is most problematic as there is no out-of-the-box way on Android to display the Wifi IP address using UMG.

More info here: