{endcode}
 or open *Condor.sln* in Visual Studio and build interactively.
 
+***Note - If the build fails remove external and local build folders***
+
+**Then start over. We don't recover well after a failed build.**
+
 {subsection: Building Tests}
 
 Build the *tests* target in the Condor.sln Solution File. Once built you can run all the batch tests as before.