| File Extension: | H1S |
| File Type Description: | Windows Assistance Platform Help File |
| File Type Developer: | Microsoft Corporation |
| Primary Associated Software: | Microsoft Windows |
| Primary Software Developer: | Microsoft Corporation |
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Microsoft Corporation created the Windows Assistance Platform Help File (H1S) file for the Microsoft Windows software series. Commonly, Windows Assistance Platform Help File files are found on user computers from China, and on PCs running the Windows 10 operating system. Google Chrome is the predominant internet browser used by this population.
 | xHelpMarkup by Ulrich Kulle |
 | Microsoft Assistance Platform by Microsoft Corporation |
 | Microsoft Windows by Microsoft Corporation |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .WPD | Corel | Text Files | WordPerfect Document |
| .PNO | Microsoft Corporation | Audio Files | Windows 8 Piano Song |
| .XRX | Microsoft Corporation | Settings Files | Expression Encoder Media Profile Settings |
| .SEC | Symantec Corporation | Uncommon Files | Pretty Good Privacy Secret Key Ring |
| .AMN | Microsoft Corporation | Data Files | Aero Studio 2008 Menu Data |
| .HXE | Microsoft Corporation | Data Files | Microsoft Windows Help Samples Definition File |
| .NLS | Uri Wilensky | Developer Files | NetLogo Source Code File |
| .XHT | Open Source | Web Files | XHTML File |
| .L | Johan Bontes | Data Files | Game Of Life File |
| .WRK | Cakewalk, Inc. | Audio Files | Cakewalk Music Project |
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