How I can start EpicGames Launch Starter?

Hello,
I have downloaded Unreal Engine. It has the file type .msi and I can’t start . What I have to do? Have to cange the file type?
Sorry, but I’m an amateur in programming.

Help me, please!

Hi!

File with MSI extension is an installer. Just click on it and install Launcher. If installer can not start, maybe file corrupted and you need download again. Or you using 32-bit version of Windows. Launcher and UE4 required windows 64 only.