Microsoft KB Archive/813517

= &quot;The messaging interface has returned an unknown error&quot; error message when you create a new e-mail message or forward a message in Outlook 2002 =

Article ID: 813517

Article Last Modified on 1/7/2006

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APPLIES TO


 * Microsoft Outlook 2002 Standard Edition, when used with:
 * Microsoft Windows XP Professional

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SYMPTOMS
When you try to create a new e-mail message or forward a message, you may receive the following error message:

The messaging interface has returned an unknown error. If the problem persists restart Outlook



CAUSE
This issue may occur if all the following conditions exist:
 * 1) You upgrade to Windows XP.
 * 2) You install Windows XP to a new folder.
 * 3) You reinstall Office XP.



RESOLUTION
To resolve this issue, obtain and install Outlook 2002 Public Update: October 4, 2001.

For additional information about how to obtain and install Outlook 2002 Public Update: October 4, 2001, click the following article number to view the article in the Microsoft Knowledge Base:

300551 OL2002: Overview of the Outlook 2002 Public Update: October 4, 2001

Keywords: kberrmsg kbprb kbupdate KB813517

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