. This is useful if you want to keep your final package size smaller and assume your users already have common runtimes installed. Unreal Engine troubleshooting steps for a particular error message you are seeing?
UE4PrereqSetup_x64.exe /quiet /norestart
This usually means the prerequisites are already installed. You can select "Close" or manually run the installer from the game's Redist folder.
Are you getting a (like 0x80070643 ) during the setup that I can help you troubleshoot?