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

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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
Properties

Article ID: 813517 - Last Review: 12/08/2015 01:56:47 - Revision: 1.2

Microsoft Outlook 2002 Standard Edition

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