Purely as a matter of interest: the file in page 2 of this thread identified as the x64 64-bit XP version of WinHlp32.exe is actually a 32-bit file, but with a higher version number, v5.2.3790.1830,...

Some time ago I installed the fix given by Komeil Bahmanpour; it worked fine under Win10/64. I don't use .HLP often; when I recently invoked it, after updates including Win10 Anniversary, I got the...