Resolving PST Error using Import-Mailbox cmdlet

At times you might need to import Outlook PST data to an Exchange Server mailbox. In contrast to the earlier versions, Exmerge utility in Exchange 2007 is no longer supported for importing data from an Outlook PST.


For this to happen, you would have to use Import-Mailbox cmdlet (commandlet). The cmdlet conducts administrative tasks but it won’t allow you to import PST items if the file is corrupt. In case of corruption, you might receive error messages suggesting you to run Inbox Repair Tool (scanpst.exe).

The Import-Mailbox command is usually run through Windows Powershell- an extensible automation engine consisting of command prompt and related scripting language. Consider a situation when you try running Import-Mailbox command for a PST with the help of Windows PowerShell. During this time, you might come across one or more of the following symptoms:

  • PowerShell reports that it has encountered a problem and needs to close

  • Application event log reads a .Net Runtime 2.0 error

  • You receive an error message saying- “Faulting application powershell.exe, version 6.0.5430.0, stamp 451acab4, faulting module olmapi32.dll, version 12.0.4518.1014, stamp 45428191, debug? 0, fault address 0×0024a22f.”

The reason behind all this happening is that the imported PST has gone corrupt. We suggest you to perform the following steps to resolve the existing issue:

  1. Run Inbox Repair Tool (Scanpst.exe) for repairing the corrupt PST files. It is a hidden file and comes with MS Outlook.

  2. If you have a recent backup available, then you can delete the corrupt PST and restore from the backup.

  3. If you are able to access the corrupt PST file, then create a new PST and try importing data from the old PST

  4. If in case your PST is not accessible and there is no backup available, then we suggest you to use third party PST repair utility.

Using third-party Outlook repair tool ensures you of accurate and effective PST recovery. It recovers all emails, contacts, calendar, drafts, notes, sent items, etc. from corrupt PST file.