| File Extension: | W31 |
| File Type Description: | Windows 3.1 Startup Data |
| File Type Developer: | Microsoft Corporation |
| Primary Associated Software: | Microsoft Windows 3.x |
| Primary Software Developer: | Microsoft Corporation |
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Release of the Microsoft Windows 3.x software program prompted the development of the Windows 3.1 Startup Data file type by Microsoft Corporation. Internal website statistics show that W31 files are most popular with users in United States and those running the Windows 10 operating system. Generally, we have found that most of these people are Google Chrome users.
 | Microsoft Windows 3.x by Microsoft Corporation |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .HXR | Microsoft Corporation | Data Files | Microsoft Help Data File |
| .PXL | Microsoft Corporation | Data Files | Pocket Excel File |
| .DT2 | Microsoft Corporation | Raster Image Files | Windows Live Messenger Emoticon Image File |
| .URL | Microsoft Corporation | Web Files | Internet Shortcut |
| .CHORD | Open Source | Text Files | Song Chords File |
| .LE | Microsoft Corporation | Executable Files | DOS/4GW PM 32X DOS Extender Executable Image |
| .PPSX | Microsoft Corporation | Data Files | PowerPoint Open XML Slide Show |
| .CRL | Various Developers | Web Files | Certificate Revocation List File |
| .KOR | Epic Games | Game Files | Unreal Engine Language Localization |
| .DATASOURCE | Microsoft Corporation | Uncommon Files | Microsoft Visual Studio Data Source |
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