You receive an error message when you try to start Outlook 97 after you upgrade to Outlook 2000 in Internet Mail Only mode (222313)

NOTE: These procedures only apply if you have installed Outlook with the Internet Mail Only option. To determine your installation type, click About Microsoft Outlook on the Help menu. If you have the Internet Mail Only option installed, you see "Internet Mail Only".

For information about the differences between Microsoft Outlook and Microsoft Outlook Express e-mail clients, click the following article number to view the article in the Microsoft Knowledge Base:

257824 OL2000: Differences Between Outlook and Outlook Express

SYMPTOMS

After installing Microsoft Outlook 2000 in Internet Mail Only mode as an upgrade from Outlook 97, and then returning to Outlook 97, you receive the following error when attempting to run Outlook:

Unable to open your default mail folders. An unexpected error has occurred. MAPI was unable to load the information services Pstprx.dll. Be sure the service is correctly installed and configured.

CAUSE

The original profile used with Outlook 97 contains information that has been changed in the Outlook 2000 account configuration.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

MORE INFORMATION

When Outlook 2000 Internet Mail Only is set up, the profile (account) information is migrated from the existing Outlook 97 profile. The profile is renamed "Microsoft Internet Mail Settings." These settings are not converted back when Outlook 97 is reinstalled.

NOTE: In rare cases it may be necessary to replace the existing Personal Folder, also.

REFERENCES

For additional information about using profiles in Outlook, please see the following articles in the Microsoft Knowledge Base:

195478 OL2000: (CW) User Profiles and Information Services

162203 OL97: User Profiles and Information Services