If you are searching tools that Open OST file in Outlook, try OST Opener tool to read or open an offline OST file in Outlook 2013, Outlook 2016, 2010 & 2007.

What is OST file and its location?

OST stands for Off-line Storage Table which is an email resource on offline mode for Exchange & Outlook email clients user. As you know that an offline OST file enable to open in Outlook by default therefore user can try either manual process or third party tool to open OST file in Outlook with entire mailbox. An OST file is located in local system according to MS Outlook application versions. In different Outlook editions, OST file locate differ in client systems which are in following-
For Outlook 2010
Windows Vista, Windows 7, Windows 8 and Windows 10
Drive: \Users\%username%\AppData\Local\Microsoft\Outlook
Windows XP
Drive: \Documents and Settings\%username%\Local Settings\Application Data\Microsoft\Outlook
For Outlook 2007
Windows Vista
Drive: \Users\user\AppData\Local\Microsoft\Outlook
Windows XP or Windows Server 2003
Drive: \Documents and Settings\user\Local Settings\Application Data\Microsoft\Outlook

How to Open OST File in Outlook?

There are two different way to open an offline OST file in MS Outlook which is following-
Manual Process - It is a free or unpaid solution that open OST file in Outlook by drag & drop solution or migration manual solution which is offered by Microsoft.
Exit Outlook.
  • In Control Panel, click or double-click Mail.
  • On the E-mail tab, select the Exchange account, and then click Change.
  • Clear the Use Cached Exchange Mode check box.
  • Click More Settings.
  • On the Advanced tab, click Offline Folder File Settings.
  • Click Disable Offline Use, and then in the dialog box that appears, click Yes.
  • Again, click Offline Folder File Settings.
  • Click OK.
  • In the dialog box that appears, click Yes.
  • Under Cached Exchange Mode Settings, select the Use Cached Exchange Mode check box.
  • Click OK, click Next, and then click Finish.
  • In the Account Settings and Mail Setup dialog boxes, click Close.

Third Party Tool to Open OST File in Outlook - There are no. of third party tools available online which is able to repair offline OST file and successfully open OST file in all editions of MS Outlook including Outlook 2016 to Outlook 97. User can download OST Recovery software that restore offline OST file on offline Exchange Server and open all mailbox of OST file in Outlook as PST file format with all email objects.
  • Select OST File
  • Preview Offline OST file with email & items properties.
  • Open OST file in Outlook as PST file

Last edited Feb 8 at 7:13 AM by ajayabhay, version 6