Microsoft KB Archive/193111

= XCLN: Encrypted Mail Unreadable by Exchange Client =

Article ID: 193111

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Client 5.5
 * Microsoft Exchange Client 5.0
 * Microsoft Exchange Client 4.0
 * Microsoft Exchange Client 5.0
 * Microsoft Outlook, Exchange Server Edition
 * Microsoft Outlook 97 Service Pack 1
 * Microsoft Outlook 97 Service Pack 1
 * Microsoft Outlook 97 Service Pack 1
 * Microsoft Outlook 97 Standard Edition
 * Microsoft Outlook 98 Standard Edition

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This article was previously published under Q193111



SYMPTOMS
When you are using an Exchange or Outlook client, and you receive an encrypted message sent from an Outlook 98 client, the message may be unreadable. Other messages received with Key Management Server encryption are readable.



CAUSE
Outlook 98 supports S/MIME encryption; Exchange and Outlook client versions earlier than Outlook 98 do not.



WORKAROUND
Messages sent from an Outlook 98 client to an Exchange or pre-98 Outlook client should not be encrypted.

Additional query words: 8.5

Keywords: kbprb KB193111

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