| File Extension: | H1Q |
| File Type Description: | Microsoft Help Merged Query Index |
| File Type Developer: | Microsoft Corporation |
| Primary Associated Software: | Windows XP |
| Primary Software Developer: | Microsoft Corporation |
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Primarily, a H1Q file extension is a type of Microsoft Help Merged Query Index file developed for the Windows XP software program by Microsoft Corporation. According to our internal data, Microsoft Help Merged Query Index files are most popular with users in Japan, with a majority of them running Windows 10. Generally, we have found that most of these people are Google Chrome users.
 | Windows XP by Microsoft Corporation |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .PAG | Microsoft Corporation | Data Files | Visual Basic Property PAGe File |
| .WPJ | Watcom International Corporation | Uncommon Files | Watcom C/C++ Project |
| .XBX | Microsoft Corporation | Raster Image Files | Xbox Icon Or Picture |
| .PDW | AcaClone | Data Files | pDRAW32 DNA File |
| .CNF | MySQL AB | Settings Files | MySQL Configuration File |
| .DCX | ZSoft Corporation | Raster Image Files | Zsoft Multi-Page Paintbrush File |
| .DTS | CyberLink | Audio Files | DTS Encoded Audio File |
| .SQR | Oracle Corporation | Data Files | SQL Program File |
| .SEARCHCONNECTOR-MS | Microsoft Corporation | Data Files | Microsoft Windows Search Connector Description File |
| .MP2V | Roxio | Video Files | MPEG-2 Video File |
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