.OST File Overview

File Extension: OST
File Type Description: Outlook Offline Data File
File Type Developer: Microsoft Corporation
Primary Associated Software: Microsoft Outlook 2016
Primary Software Developer: Microsoft Corporation

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OST

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What is File Extension OST?

Primarily, a OST file extension is a type of Outlook Offline Data File file developed for the Microsoft Outlook 2016 software program by Microsoft Corporation. Website visitor analysis indicates that OST files are commonly found on Windows 10 user machines, and are most popular in Romania. Frequently these users are visiting our web site using Google Chrome.


Top OST User Languages

Top OST File User Browsers

Desktop Friendly?

Yes

Mobile Friendly?

Yes

Most Popular OST File Countries

Top User Operating Systems

Windows 10 Windows 11 Windows 6 Windows 8.1

Associated Operating Systems

Windows
iOS
Android
Windows Phone
OS X El Capitan

Other File Types Related to OST Files

Extension File Type Developer File Category File Type Description
.DEF Microsoft Corporation Developer Files Module Definition File
.MMM Magix Software GmbH Audio Files Music Maker Arrangement File
.IVF Intel Corporation Video Files Indeo Video Format File
.FFD Microsoft Corporation Data Files SharePoint FFDDumper Log
.HTT Microsoft Corporation System Files Hypertext Template File
.NB0 Unknown Developer System Files Device Boot Loader Image
.CSH Adobe Systems Incorporated Uncommon Files Photoshop Custom Shapes File
.FPR Hewlett-Packard Data Files Audit Workbench Project
.PDR Microsoft Corporation System Files Windows Port Driver
.NST Microsoft Corporation Data Files Outlook Connector For Notes File


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