Microsoft Outlook uses profile information to remember its e-mail accounts and all the settings, which instruct the application where all your e-mails are stored. A profile is basically consisted of e-mail account information, such as user-name, e-mail server name, ISP (Internet Service Provider) account password, and default e-mail delivery location (an e-mail server or PST) information. In cases, when you find issues opening an Outlook profile, the issue can root both from a corrupted profile and damaged PST. However, if the PST is corrupted, you need an Outlook Recovery solution if a valid backup is not available.For instance, you can consider the following scenario:

You run MS Outlook 2007 on a Windows Vista-based computer
You use Windows Update and install Service Pack 2 (SP2)
The next time, when you try to start MS Outlook, it prompts an error message as below:

“Cannot start Microsoft Office Outlook”

The application fails to open the default Outlook profile and data file.

Cause

Some possible causes for this behavior are:

Navigation Pane issues for the current profile
Outlook installation is corrupted
The default Outlook profile and/or PST is damaged

Solution

To solve the above problem, you need to implement these steps:

You need to regenerate the Navigation Pane for Outlook profile. To do so, click Start | Run and type ‘Outlook.exe /resetnavpane’, which clears the existing Navigation Pane and recreate it for the Outlook profile.
If the current Outlook installation is damaged, you should reinstall it.
You can recreate the profile if it is damaged and then attach the existing PST to it. If Outlook still reports the above mentioned error message, your PST might be corrupted. You need to repair it by running Inbox Repair Tool (Scanpst.exe). In case the PST remains damaged, you should restore it from backup or use a PST Recovery utility to repair it.

The third-party Microsoft Outlook Recovery applications are high-end tools designed to repair a corrupted PST and extract the inaccessible file components. The software are easy to install and use.

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