UE 4.10 installation failed with Error Code R-1638

I’m attempting to install 4.10; I’m new to Unreal Engine. After looking at some other posts, I’ve checked administrative privileges and gotten the C++ tools for Visual Studios 2015 Update 1 as suggested, but I get the same error code every time. The prerequisite executable fails and I get code R-1638. I’ve attached the error and DX Diagnostic. I’m completely out of ideas and wondered if someone might know what’s going wrong.

I get the same
the error report alternates between this and r-1223 though (someone else already asked about that Prerequisites error E-1223 - could not install - Getting Started & Setup - Epic Developer Community Forums with as of yet no reply)

Alright so I have the same problem and do not have the time to test this fix right now (currently uninstalling VS 2015 things, but maybe this helps:

Hi everybody!!!
I have the same problem, and the “enigma” was solved:link text

Thank you! That fixed it!