Error windows SDK v8.1 must be installed in order to build this target

I have UE 4.18.3 and Visual Studio 2017 community edition installed. When I tried packaging my project for Windows x64 only I got the message described in this topic. So I downloaded and installed it from Microsoft’s website.

Then when I tried to package the project again I got this message:

“The Binaries for this Target Platform are not currently installed, would you like to use the Launcher to download them?”

When I clicked Yes, the launcher crashed.

I then followed Cello’s advice and rebooted. Still getting a launcher crash.

Any ideas?