Steam sessions are unable to be found in packaged games that use a source built editor from Github. According to users, this is related to the BuildId not being set properly so the packaged games are not able to see each other. This also may be related to the CompatibleChangelist and Changelist field being empty, but that was also the case in 4.19's release.

This can currently be worked around by adding a BuildId override to the following lines to the user's project's defaultengine.ini in the OnlineSubsystem section:


Regression?: Yes
This did not occur in 4.19.2

Note: This has not yet been tested in Main. That is currently being tested.

Steps to Reproduce
  1. Download the attached project
  2. Download and build a source built editor from Github
  3. Open the project in that new version of the editor
  4. Package the game for Win64 Development
  5. Place the packaged game on two machines that are both signed into Steam with separate accounts
  6. On computer A, open the project and press Create
  7. On computer B, open the project and press Find
    Result: Computer B fails to find Computer A's session
    Expected: Computer B joins Computer A's session

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Affects Versions4.20
Target Fix4.20.1
Fix Commit4232410
Main Commit4352452
CreatedJul 25, 2018
ResolvedJul 25, 2018
UpdatedSep 19, 2018