SU-BI-CA: Build info client auth error

You may run into this error code due to a network connection issue preventing you from being able to authenticate. You can see if this error is happening by reviewing your Epic Games Launcher log files. For more information on how to locate these click here.

Below is an example from a log file suffering from this error. It reveals that the player is unable to connect due to an SSL timeout resulting in a server connection failure:

Disable background applications

Often times a background application causes this error due to blocking your connection. Make sure to disable all your background applications as outlined: How do I disable background applications? Then try again.

Use the -SkipBuildPatchPrereq launcher option

  1. Close the Epic Games Launcher entirely.
  2. Right-click on the Epic Games Launcher shortcut and click Properties.
  3. At the end of the Target line insert the following:
    Example: "C:\Program Files (x86)\Epic Games\Launcher\Portal\Binaries\Win64\EpicGamesLauncher.exe" -SkipBuildPatchPrereq
  4. Click on Apply.
  5. Right-click on the Epic Games Launcher shortcut.
  6. Click on Run as Administrator.

Network connection troubleshooting

Make sure to go through all of our network connection fixes should assist you in resolving this error code: How to troubleshoot connection issues.

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