| 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 |
|---|---|---|---|
| .AI4 | Adobe Systems Incorporated | Vector Image Files | Encapsulated PostScript File |
| .LCN | Microsoft Corporation | Encoded Files | License File |
| .PRF | Microsoft Corporation | Settings Files | Outlook Profile File |
| .DOCX | Microsoft Corporation | Text Files | Microsoft Word Open XML Document |
| .VCF | Palm | Data Files | VCard File |
| .IDB | Microsoft Corporation | Developer Files | Visual Studio Intermediate Debug File |
| .AHI | Microsoft Corporation | Data Files | Microsoft Dynamics AX Online Help Index |
| .MET | Emulex Corporation | Data Files | eMule Resource File |
| .CRTX | Microsoft Corporation | Data Files | Office 2007 Chart Template File |
| .MSO | Microsoft Corporation | Data Files | Microsoft Organization Chart Data File |
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