Check the Engine\Binaries\ThirdParty\Steamworks folder for a steam_emu.ini file. Ensure the DLC IDs are listed there.
The fix usually makes Steam think you are playing a free game (like Spacewar ). This is normal and required for the multiplayer overlay to work. 5. Troubleshooting Common Issues
If your PC has 8GB of RAM or less, check the box that says "Limit installer to 2GB of RAM usage." This prevents the installer from crashing due to memory exhaustion.
After downloading, run the Verify BIN files before installation.bat included in the folder. This ensures no files were corrupted during the download. 3. Installation Steps Run Setup: Launch setup.exe .