| File Extension: | HHK |
| File Type Description: | HTML Help Index |
| File Type Developer: | Microsoft Corporation |
| Primary Associated Software: | Microsoft HTML Help Workshop |
| Primary Software Developer: | Microsoft Corporation |
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The HHK file extension is a HTML Help Index file developed originally by Microsoft Corporation for Microsoft HTML Help Workshop. Data from our web servers (annonymous users) show that HHK files are most popular in United States and are often used by Windows 10. In most cases, these users are surfing the internet using the Google Chrome browser.
 | Microsoft HTML Help Workshop by Microsoft Corporation |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .PS2XML | Microsoft Corporation | Developer Files | Windows PowerShell File |
| .CUB | Microsoft Corporation | Data Files | Analysis Services Cube File |
| .HME | Microsoft Corporation | Settings Files | Windows Mobile Theme File |
| .509 | Microsoft Corporation | Web Files | Internet Security Certificate |
| .UL | Microsoft Corporation | Settings Files | Windows Updates Downloader Update List File |
| .SWM | Microsoft Corporation | Disk Image Files | Split Windows Imaging Format File |
| .GSA | Microsoft Corporation | Data Files | Microsoft Office Groove 2007 Archived Workspace |
| .GPR | Molecular Devices | Data Files | GenePix Results File |
| .FLF | Microsoft Corporation | Uncommon Files | Microsoft Dynamics NAV License File |
| .BCD | Microsoft Corporation | System Files | Windows Boot Configuration Data File |
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