title: Visual Studio Build Error "csc.exe" exited with code -532462766
body: <p>Getting a csc.exe error with the .NET samples from the site.  Running in a Windows 10 x64 environment; projects came in as Win 8 and were required to be retargeted to 8.1. Now the projects don't build. Turned on diagnostics logging to get the detail. Is there a way to get the full command line that is being invoked on build?</p>
  
  <p>Description 
  "csc.exe" exited with code -532462766.
  Project File C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.CSharp.CurrentVersion.targets
  Line 246    </p>