Download the updated Winhlp32 installation files, which are compressed into a zip file (winhlp32-windows-7-10-x86-64.zip) from the following link: https://drive.google.com/open?id=0B_tSrOg4FLp1T0dyTEppaW9SYm8
Extract the contents of of the file you just downloaded (winhlp32-windows-7-10-x86-64.zip)
Run the Install.cmd as Administrator by right-clicking on Install.cmd, then select Run as Administrator.
Acknowledge any privilege warnings and allow Install.cmd to proceed.