How do I get Unreal 4 to compile?

I downloaded Unreal 4 recently to take part in a series of video lectures, but every time I try to load up the engine and create a new project it fails to compile. I have included a picture showing what happens immediately after I click create project and wait through a couple of loading bars.
I have already deleted and redownloaded Unreal 4 a couple times and in different places in my file hierarchy with no results. I tried following the path
D:\Omni\UE_4.20\Engine\Programs\CrashReportClient
to see if I could find a crash report of some sort but the folder was empty.
If anyone could offer any advice on how to resolve the matter, or figure out what is going wrong, I would greatly appreciate it.

Yeah, i’ve seen this before. I got an answer to this on another post.

this is the original post:
yes, that SDK is used for the c++ compiling (as you may have guessed) launch the VS installer program (make sure normal VS is closed) and down load that particular sdk. see bellow for details.
read this https://docs.unrealengine.com/latest/INT/Programming/Development/VisualStudioSetup/

and then this https://docs.unrealengine.com/latest/INT/Programming/Development/VisualStudioSetup/UnrealVS/index.html

Let me know how this works out

Trying it now, hang on.

I got it to work. I had thought I’d already downloaded 8.1 but trying to do it again seemed to make everything work. Thank you for the help!