Microsoft KB Archive/823579

= You receive an error message when you open an e-mail message that you saved in Outlook 2007 or in Outlook 2003 =

Article ID: 823579

Article Last Modified on 3/1/2007

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APPLIES TO


 * Microsoft Office Outlook 2007
 * Microsoft Office Outlook 2003
 * Microsoft Outlook 2002 Standard Edition

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SYMPTOMS
In Microsoft Outlook 2002, when you try to open an e-mail message that you saved in Microsoft Office Outlook 2007 or in Microsoft Office Outlook 2003, you receive the following error message:

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



CAUSE
This issue occurs when the e-mail message that you are trying to read is encoded in Unicode format.



WORKAROUND
To work around this issue, when you save the e-mail message in Outlook 2007 or in Outlook 2003, use a non-Unicode format. To do this, follow these steps:
 * 1) In Outlook, click the e-mail message that you want to save.
 * 2) On the File menu, click Save As.
 * 3) In the Save in box, click the location where you want to save the file.
 * 4) In the File name box, type a name for the file.
 * 5) In the Save as type box, click any file type except Outlook Message Format - Unicode, and then click Save.

Additional query words: ol2002 ol2003 OL2007

Keywords: kbemail kberrmsg kbprb KB823579

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