Dealing With “.pst Is Not Compatible” Error

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This article deals with Outlook PST file incompatibility issue when you open an Outlook 2003 or Outlook 2007 .PST file in earlier versions of MS Outlook. Many of us have actually experienced it. When you use a version of Outlook that is earlier than Microsoft Office Outlook 2003, you possibly experience the PST file incompatibility problem. If you try to open or to import a personal folder file .PST that contains information that was exported from Microsoft Office Outlook 2003 or from Microsoft Office Outlook 2007, you might receive the following error message:

The file file_name.pst is not compatible with this version of the Personal Folders information service.
Contact your Administrator.

Reason behind this incompatibility issue

This problem occurs when the information in the .PST file was exported from Outlook 2003 or from Outlook 2007 by using the Import and Export Wizard. Outlook 2003 and Outlook 2007 use the Unicode format to export information to a .PST file. Earlier versions of Outlook cannot open or import Unicode-formatted .PST files but can only open .PST files that are in American ...
... National Standards Institute (ANSI) format.

Resolution

In order to resolve this problem, first of all copy the contents of the Outlook 2003 or Outlook 2007 .PST file to a .PST file that has not been converted to the Outlook 2003 or Outlook 2007 Unicode format.

To copy information from a Unicode-formatted .PST file to an ANSI-formatted .PST file in Outlook 2003 or in Outlook 2007, follow below mentioned steps. Make sure that you use a .PST file from an earlier version of Outlook.

1. Start Outlook.

2. On the File menu, click Data File Management, and then click Add.

3. Click Outlook 97-2002 Personal Folders File (PST).

4. Click OK.

5. Click OK to accept the default name, and then click OK again.

6. Outlook 2003 now creates a new .pst file that is based on the earlier .pst file and maintains the ANSI formatting for that .pst file.

7. Click Close.

8. At the bottom of the navigation pane, click Folder List.

9. In the navigation pane, you now see the new .pst file.

10. Drag the information from your existing Outlook 2003 or Outlook 2007 folders to the new .pst file. You may also use the Import and Export Wizard on the File menu to move the information from your existing Outlook 2003 or Outlook 2007 folders to the new .pst file.

11. In the navigation pane, right-click the new .pst file, and then click Close "file_name".

Going with above steps will resolve this incompatibility issue of PST file. If there is corruption in Outlook PST file and all Outlook emails are inaccessible, then you can Restore PST file using professional Outlook PST recovery software.

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www.restorepst.com