Epic Games Launcher

What works

The self-update window appears the launcher successfully updates itself.

What does not

At least on my Nvidia system, the launcher update process fails on pre-requirements with the error code "SU-PQR1603".

Terminal output is:

LogPrerequisites: Error: Prerequisites executable failed with code 1603
LogBuildPatchServices: Error: EBuildPatchInstallError::PrerequisiteError PQR1603
LogSelfUpdateService: Error: Update staging failed.
LogWindows: Warning: Register touch input failed!
LogPortal: Error: FAlertReporter: Reporting Alert code: SU-PQR1603

I managed to find the executable:

"C:\Program Files (x86)\Epic Games\Launcher\Portal\SelfUpdateStaging\Install\Portal\Extras\Redist\LauncherPrereqSetup_x64.exe"

which, on manual execution, returns with code 1603. The executable is a cab file, so can be extracted with cabextract and it contains a DirectX runtime installation.

So that apparently fails with Nvidia. Unfortunately the SkipBuildPatchPrereq command line argument workaround doesn't work anymore, with newer Epic Games Launcher versions.

Workarounds

What was not tested

The game launcher ran before, when testing older versions of the game launcher. Starting games could not be tested.

Hardware tested

Graphics:

• GPU: Nvidia
• Driver: proprietary

Additional Comments

Version of the Launcher: 10.2.2-7064828