If you are running into a Steam Offline error message when launching the game, you should see a notification like this:
To fix this, please ensure:
- Your game is up-to-date.
- Your Steam client is up-to-date.
- Steam is running with administrative privileges.
- Your antivirus or firewall is not blocking Steam or Dead by Daylight.
- You are running Dead by Daylight directly from your Steam library and not from a shortcut.