.H1S File Extension

Windows Assistance Platform Help File

Developer Microsoft
Popularity
4.0  |  32 Votes
 

What is an H1S file?

Compiled help document format introduced with Windows Vista and also supported in Windows 7; run by the Assistance Platform client (HelpPane.exe), which is installed by default in Windows; used by Microsoft and OEMs for producing help documents, but not used by third-party software developers.

More Information

Several pre-installed H1S files can be found in the following directory:

C:\​Windows\​Help\​Windows\​en-US\​

NOTE: H1S files can be compiled using the Apcompnt.exe program included with the Assistance Platform Help Compiler. They can also be decompiled using xHelpMarkup.

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Programs that open or reference H1S files

Windows
Microsoft Assistance Platform
Included with OS
Help-Info xHelpMarkup
Free

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