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OL2000: An Encryption Failure Occurs When You Upgrade from Exchange Client 5.0 to Outlook 2000

This article was previously published under Q264389
This article has been archived. It is offered "as is" and will no longer be updated.
When you try to open an existing encrypted message or try to send a new encrypted message in Outlook 2000, you may receive the following error message:
File containing security information could not be found.
You receive this error message when you upgrade Microsoft Exchange Client 5.0 to Outlook 2000 or Outlook 2000 Service Release 1 (SR-1).
To resolve this problem, obtain the latest service pack for Microsoft Office 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
276367 OFF2000: How to Obtain the Latest Office 2000 Service Pack
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Article ID: 264389 - Last Review: 10/20/2013 21:20:17 - Revision: 4.3

Microsoft Outlook 2000 Standard Edition

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