| File Extension: | PST |
| File Type Description: | Outlook Personal Information Store File |
| File Type Developer: | Microsoft Corporation |
| Primary Associated Software: | Microsoft Outlook Express |
| Primary Software Developer: | Microsoft Corporation |
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Outlook Personal Information Store File files were originally developed by Microsoft Corporation for the Microsoft Outlook 2016 software application. User statistics infer that these PST files are popular with users from United States and most frequently found on the Windows 10 platform. A high percentage of these users browse the web using Google Chrome.
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | iOS |
 | Android |
 | Windows Phone |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .M4A | Apple | Audio Files | MPEG-4 Audio File |
| .MPO | CyberLink | Raster Image Files | CIPA Multi Picture Object File |
| .AXD | Microsoft Corporation | Web Files | ASP.NET Web Handler File |
| .SEG | SEG (The Society of Exploration Geophysicists) | Data Files | SEG-2 Data File |
| .NICK | Microsoft Corporation | Uncommon Files | Microsoft Outlook Nickname File |
| .YAML | Unknown Developer | Developer Files | YAML Document |
| .PKGUNDEF | Microsoft Corporation | Developer Files | Microsoft Visual Studio Shell File |
| .JFW | ESRI | GIS Files | JPEG World File |
| .SILK | Microsoft Corporation | Spreadsheet Files | Microsoft Excel Symbolic Link Format |
| .STL | 3D Systems | CAD Files | Stereolithography File |
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*Files that are not supported can be opened in binary format.
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