| 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 United States, 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 |
|---|---|---|---|
| .ASA | Microsoft Corporation | Web Files | ASP Configuration File |
| .PLSC | Microsoft Corporation | Executable Files | Messenger Plus! Live Script File |
| .VCT | Clark Labs | GIS Files | IDRISI Vector Image |
| .LESS | Adobe Systems Incorporated | Web Files | LESS Style Sheet |
| .OXPS | Microsoft Corporation | Page Layout Files | OpenXPS File |
| .OTP | Oracle Corporation | Data Files | OpenDocument Presentation |
| .XML | Wattle Software | Data Files | XML File |
| .WCD | Microsoft Corporation | Data Files | Microsoft Works Calendar File |
| .PMQ | Microsoft Corporation | Developer Files | Microsoft Target Analyzer File |
| .GFW | Open Source | GIS Files | GIF World File |
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