Which you need the visual studio installer for, which only works half of the time. Just to check if it still is as bad as last I tried, I downloaded the build tools and started the installer. Currently downloading 1 GB of data...

Edit: To nobodies surprise, the installer still doesn't work. The command line shortcuts it installs fail to properly set up the path. At least it looks like they are trying to print a sensible error message in the command prompt now though. Still not quite sure how they manage to fail this badly though.