DOCUMENT:Q192181 02-MAY-1999 [exchange] TITLE :XADM: Renewing User Certificates in Key Management Server PRODUCT :Microsoft Exchange PROD/VER:WINDOWS:4.0,5.0,5.5 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, versions 4.0, 5.0, 5.5 ------------------------------------------------------------------------------- SUMMARY ======= In Key Management Server, a user's certificate has a valid lifetime of 18 months by default. After that time, it will expire. Before this happens, the certificate has to be renewed. At approximately 12 months, the Exchange client or Outlook client will automatically remind the user to renew their certificate. The user will receive the following message when they log on to advanced security: Your security certificates are approaching expiration. Do you want to send a certificate update request to the Key Management Server? No administrator intervention is required. If the user clicks Yes, the request is sent to the Key Management Server. The new certificate is sent back in e-mail and is valid for another 18 months. MORE INFORMATION ================ If the user chooses not to update the certificate, then they will be prompted again the next time they log on to advanced security. If they let the certificate expire, they need to be re-enrolled to be able to use advanced security. ====================================================================== Keywords : Technology : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2 Version : WINDOWS:4.0,5.0,5.5 Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.