Home : File Types : H1S File

.H1S File Extension

File TypeWindows Assistance Platform Help File

4.0 (22 Votes)
CategorySystem Files

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:


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 H1S files

Updated 9/12/2012

About H1S Files

Our goal is to help you understand what a file with a *.h1s suffix is and how to open it.

The Windows Assistance Platform Help file type, file format description, and Windows programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

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