I have old .OST file which became corrupt! What should I do to repair OST?

5 pts.
OST file conversion
I have laptop running Windows 7 and I have old .OST file which became corrupt! What should I do to repair OST?

Software/Hardware used:
Ost file

Answer Wiki

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Before you bother repairing OST files using third party solution, please read the following: Take a look at versions of Microsoft Outlook you are using. So here are two fixes that will depend on your situation.

  1. OST Integrity Checker Tool is used in earlier versions of Outlook(2007,2003,2002) to repair OST file.
  2. Inbox Repair Tool is used in  Outlook 2010 and other newer versions of Outlook to repair internal structure of OST file.
If unable to repair .ost file by Inbox Repair Tool, then you should use third party application like OST file repair tool that helps you to repair corrupted .ost file and save it into .pst file format easily.

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  • Sivaperumal
    scanpst.exe file helping for repair the ost file. this file included in ms office package. in 2007 located at C:\Program Files (x86)\Microsoft Office\Office12\SCANPST.EXE.

    250 pointsBadges:
  • Amanda lakai
    Hi, I would like to know the type of your Outlook email setup. Is it POP3, IMAP or AutoDiscover? Are you using OWA? 

    First check the properties of your distribution list. File>"Include these recipient types" then select "All types".  Re try sending invitation.
    If doesn’t help, Try out the following fixes for the error:
    1. Try repairing your Outlook installation.
    2. Re create your Outlook profile and then set up the email account again, create a group (Distribution list) for these contacts, check if the problem still persists. 
    3. Set up the email account on other computer and then check, does the error occur?
    4. Verify your auto discover service http://technet.microsoft.com/en-au/library/aa995956.aspx. You may also require deleting the old Autodiscover Virtual Directory and then create a new one. 
    5. Run the powershell command:
     Set-DistributionGroup "<DistributionGroupName>" - ReportToManagerEnabled $true
    6. Try out the Microsoft Office 2010 available at :  http://support.microsoft.com/kb/2266424

    Let me know if it helps.
    2,360 pointsBadges:
  • Amanda lakai
    Have you tried the Inbox repair tool (ScanPST.exe) & OST Integrity Check tool to fix the OST file related issues? 

    These are free repair tools. To know more about the utilities, have a look at: http://office.microsoft.com/en-001/outlook-help/repair-outlook-data-files-pst-and-ost-HA010075831.aspx.

    Hopefully it would resolve your problem. 

    If it fails to recover your corrupt OST file then, you need to get some powerful OST recovery software. You can find many OST repair software available online along with DEMO version. You can try the free DEMO version, if it seems to be helpful. Then, you can go ahead for full version purchase.

    Check the link:

    2,360 pointsBadges:
  • Alex456
    3,300 pointsBadges:
  • Alex456
    You can solve your query here; https://gallery.technet.microsoft.com/How-Do-I-Repair-My-OST-1787816b
    3,300 pointsBadges:
  • Subhendu Sen
    It is always recommended to use MS Office built-in tool for repairing Outlook Data. You can use third party tool, but it is not guaranteed with full satisfaction. Here is a good help from Microsoft, https://support.office.com/en-us/article/repair-outlook-data-files-pst-and-ost-25663bc3-11ec-4412-86c4-60458afc5253
    126,950 pointsBadges:

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