Last Updated:  June 25, 2020


After updating to Version 2005 Build 12827.20268 or higher and starting Outlook you may see the following error prompt:

"Something is wrong with one of your data files and Outlook needs to close.  Outlook might be able to fix your file.  Click OK to run the Inbox Repair Tool."

Something is wrong with one of your data files and Outlook needs to close.


This issue is fixed in Monthly Channel Version 2005 Build 12827.20470 and higher. To install the fixed build from Outlook select File, Office Account, Update Options, Update Now.

For build availability please see the Update History.


Important: This task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs.

To workaround the issue do the following:

  1. Right Click the Windows Start button, and then choose Run.

  2. In the Open box, type regedit, and then select OK.

  3. In the left pane, expand Computer and then expand HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\PST

  4. Under the PST key delete the registry keys below and then restart Outlook:

"LastCorruptStore"="C:\\Users\\user.REDMOND\\AppData\\Local\\Microsoft\\Outlook\\*** Email address is removed for privacy ***"


Registry settings to delete 

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See Also

Fixes or workarounds for recent issues in Outlook for Windows

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