my microsoft outlook not reading .ost files


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  • Repair Outlook Data Files (.pst and .ost)

    S.Sengupta, Windows Entertainment and Connected Home MVP

    Wednesday, December 3, 2014 3:36 PM
  • Hi parikia,

    Microsoft Outlook doesn’t support manually opening or importing items from an offline Outlook Data File (.ost).

    More information, please check Open or import items from an offline Outlook Data File (.ost)

    Further, Outlook uses OST files for Exchange accounts or Hotmail/Live/MSN (MAPI) accounts. The data in the OST file is a mirror image of what is available on the email server, and you should ideally be able to retrieve this data from the server when you re-configure the account in Outlook.   

    If this is a Hotmail/Live/MSN account, we may recreate the account profile and then using Exchange Active Sync (EAS). Follow the steps in the thread below: Set up Hotmail with Outlook 2013 Preview,

    If this is an Exchange account, please consider seek help at the Outlook forum:

    Hope the information above is helpful.

    Best regards

    Michael Shao
    TechNet Community Support

    Thursday, December 4, 2014 6:42 AM
  • Go to a manual method to access your data; importing your OST file to MS Outlook.

    But if ost file is corrupted then using Kernel for OST to PST Conversion Tool you can repair your damaged ost file and convert ost to pst successfully. Visit to know more about ost recovery tool

    Friday, December 5, 2014 9:18 AM
  • It seems that your Outlook OST is corrupted, try scanost to recover your Outlook emails.

    Go through for methods and procedure for using scanost.exe

    Tuesday, December 16, 2014 4:12 PM
  • Now read .OST files directly without using MS Outlook through third party utility that provides multiple advance features also.

    Read more:

    Saturday, November 28, 2015 5:57 AM
  • You can follow the below given steps for ost to pst conversion. 

    1. Start MS Outlook and you can access the complete content in the OST files to be converted.
    2. Create new PST files.
    3. Go to the OST files and select and copy the complete content to be converted.
    4. Go back to the new PST files and paste the complete content into the PST file 

    Alternatively, you can also try GainTools OST to PST to convert OST files to PST files.
    Friday, December 29, 2017 7:34 AM
  • If you want to convert OST file to PST format, you can use few easy manual tricks that require no 3rd party tool. Microsoft Outlook client has few built-in features which you can use here, such as Archive, Export, Move, and Drag & Drop. By using these features, you can successfully import mailbox content from OST to PST file. 

    But before you can use any of the manual tricks shared in the above article, make sure: 
    1. You're using the same computer system on which the OST files were originally created.
    2. You're connected to the Microsoft Exchange Server.
    3. And most importantly, the OST files are not corrupt.

    If Manual method is not working then you can go with any third party tool like -

    Wednesday, May 23, 2018 7:37 AM
  • Free OST File Recovery Software is one the most powerful application that completely repair corrupted and damaged outlook OST File. And that is Convert OST to PST file with maintains emails properties- to, bcc, cc, time, subjects and from, contacts, calendars, task, notes, inbox items, outbox items and appointments.

    By taking help of this magnificent free OST to PST Converter Software all users get the facility to recover selective multiple data folders and restore all Outlook OST file into PST, EML, MSG, HTML, EMLX, MBOX, vCard, CSV and Office 365 cloud.

    Get more info visit our official website:-

    Monday, July 23, 2018 10:36 AM
  • You may consider OST to PST Converter tool for instant accessibility of OST files. This software will help you in the conversion of OST files in an easy way and provide you with quality results all the time. Moreover, you can get the trial of this software. I hope you will get the accurate results with this tool.

    For more details, visit on the given link –
    Wednesday, September 26, 2018 5:58 AM
  • Hello, I agreed with Michael Shao. As we know that Microsoft Outlook applications don't provide the option to import the OST file in MS Outlook application. So you first have to convert OST to PST and after that, by Importing the PST file data in Outlook application you can access data items. I hope this will help! 

    Wednesday, December 5, 2018 7:05 AM
  • You can view or read or open an OST file with Aryson OST File Viewer software.
    Wednesday, February 27, 2019 11:02 AM
  • If you Microsoft Outlook not Reading OST file? 

    There is manual method to Open OST file in Microsoft Outlook, Our KDETools OST to PST Converter program to repairs highly corrupted OST file by fixing its errors and making it readable-ready to Convert OST file into Microsoft Outlook [PST] data format including all emails, folders, attachments, contacts etc.

    Get download free version open/read and convert free 30 emails from OST file to PST

    Wednesday, May 22, 2019 4:03 PM