my microsoft outlook not reading .ost files RRS feed


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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
  • 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
  • Your Microsoft Outlook does not read the OST file so you can use third-party software like OST to PST Converter. This software will help you solve your problem.


    Saturday, July 6, 2019 12:46 PM
  • You can firstly try Free Demo OST to PST Converter software that can simply extract and convert 30 emails per items into PST file format.

    Read more:

    Wednesday, September 25, 2019 12:27 PM
  • There are multiple third-party tools available on the internet, you just need to find right solution. I have used Mailvita OST to PST Converter for Mac when I required same issue and got accurate result. The free Trial version which transfers the first 10 items from each folder. This software is supporting MS Outlook all Version 2019, 2018, 2013, 2010, 2007, 2003 etc. You can download free tool from here OST to PST Converter for Mac.
    Wednesday, January 1, 2020 5:29 AM