A corrupted PST is the prime reason that can prevent Outlook from starting. This problem can be simply resolved by recreating the PST. But if the file contains some important data, you need to restore it from a previous backup or repair the corrupted file using Inbox Repair Tool (Scanpst.exe). The Outlook repair tool works in limited number of cases. So, in situations when the tool fails, you can use a PST Repair product.

For instance, you may receive the below error message when trying to start Microsoft Outlook 2003 or 2007:

The action cannot be completed.”

The application does not start after you encounter this error message.


Microsoft Outlook can fail to start due to few possible reasons mentioned underneath:

  • No Internet or LAN (Local Area Network) connection is available

  • An antivirus software is actively locking the Outlook

  • The Outlook.exe (Outlook executable file) or PST is set to read-only

  • Some third-party add-ins are preventing Outlook from starting

  • Few Outlook program files are corrupt- Occurs usually after an upgrade

  • Outlook profile is damaged

  • The PST attached to the profile is corrupt


Based on the root cause of the issue, you can try these steps to solve it:

  • You should test your connection and take the appropriate steps

  • You can try to deactivate the antivirus software

  • Locate the Outlook.exe and PST files and check their properties to clear the read-only check box

  • For solving add-ins issue, you should start Outlook in safe mode and disable the problematic add-in(s)

  • You can remove or rename the affected Outlook program files, which include Extend.dat, Frmcache.dat, Views.dat, and Outcmd.dat

  • You should recreate the Outlook profile if it is damaged. Try to duplicate the above behavior by attaching a new and the old PST, one at a time, to check if corrupted PST is not the issue

  • To repair the corrupted PST, run Inbox Repair Tool (Scanpst.exe). If this fails, use a PST Repair Tool to repair the corrupted file. A PST Repair utility can safely extract the inaccessible file components from a corrupted PST and restore them at a safe location.

Stellar Phoenix Outlook PST Repair is an effective solution that repairs a corrupted PST and restore it as a new PST to a user-specified location. The safe PST Recovery Tool supports MS Outlook 2007,