Epic Installer Ending Prematurely

Hey.

I’ve been trying to reinstall the Epic Games Launcher in an attempt to get UE4 working after it failed to install the prerequisites and have been unable to install the launcher as I kept getting the ending prematurely issue every time it reaches the ‘Installing DirectX’ process.

I’ve managed to get an output log if anyone can help diagnose the problem.

Click for Output Log - File was too big to be an attachment

If you have any suggestions on how to resolve this, please let me know ASAP.

Thanks.