“Windows Help (WinHlp32.exe) is a Help program that has been included with Microsoft Windows versions starting with the Microsoft Windows 3.1 operating system. However, the Windows Help program has not had a major update for many releases and no longer meets Microsoft’s standards. Therefore, starting with the release of Windows Vista and continuing in Windows 8, the Windows Help program will not ship as a feature of Windows. If you want to view 32-bit .hlp files, you must download and install the program (WinHlp32.exe) from the Microsoft Download Center”
For additional information about this download, including known issues and development recommendations, please refer to the Knowledge Base article, "Windows Help program (WinHlp32.exe) is no longer included with Windows".
Of course don’t forget that you can also hit the Windows Key and F1 to launch the Windows Help and Support directly from within Windows 8, and also checkout the Support section of our website