An h1s file extension is related to Microsoft Windows Assistance Platform help engine. An h1s file stores help document.

Detailed description

Software that works with h1s file extension

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H1S file extension - Microsoft Windows Assistance Platform client help document

What is h1s file? How to open h1s files?

File type specification:

System file type icon System file type

h1s file icon: h1s filetype icon

The h1s file extension is associated with Microsoft Windows Assistance Platform. The Assistance Platform client (HelpPane.exe) is a new Help engine designed for Windows Vista.

It is not compatible with any previous versions of Windows. The Assistance Platform client is required to display Help files with the h1s file name extension.

In Windows Vista, the Assistance Platform client can be customized by OEMs, system builders, and enterprise customers under license agreement, but cannot be used by third-party programs. For more information on customizing the Assistance Platform client, see the Windows SDK.

The h1s files are binary files, which contain the help content. They are similar to MS Help 2.x hxs files.

The default software associated to h1s file type:

Assistance Platform icon

Microsoft Corporation logoAssistance Platform  Microsoft Windows software

Company or developer:
Microsoft Corporation

Assistance Platform is help engine for Windows Vista and Windows Server 2008  used to display Help files with the .h1s file extension.

Microsoft Windows Vista icon

Microsoft Corporation logoMicrosoft Windows Vista  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Windows Vista is operating system for desktop computers, laptops, tablet computers and media centers. Windows Vista was released in 2007 as a successor of Microsoft Windows XP. Windows Vista was distributed in six editions: Starter, Home Basic, Home Premium, Business, Enterprise, Ultimate. Windows Vista contains many new features, such as new GUI called Aero, multimedia tools, redesigned settings sub-systems, security improvements etc. In 2009 was Windows Vista replaced by new Windows 7.

Help how to open H1S files:

Use Assistance Platform to open *.h1s files.

How to convert file with extension H1S:

Use Assistance Platform to transform *.h1s files to other help formats.

List of software applications associated to the .h1s file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux etc.) and possible program actions
that can be done with the file
: like open h1s file, edit h1s file, convert h1s file, view h1s file, play h1s file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is ableto perform the specified software action, such as opening, editing or converting h1s files.

  • Open h1s file
  • View h1s file
  • Create h1s file
  • Others h1s file

Software that open h1s file - Microsoft Windows Assistance Platform client help document

Click on the link to get more information about listed programs for open h1s file action.

Microsoft Windows:

Main software associated with h1s file by default:
Assistance Platform small icon Assistance Platform
Microsoft Windows Vista small icon Microsoft Windows Vista

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