Microsoft KB Archive/255269

= XADM: POP3 and IMAP Clients Cannot Authenticate After the Dcpromo Process Is Run on Windows 2000 Server =

Article ID: 255269

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition, when used with:
 * Microsoft Windows 2000 Standard Edition
 * Microsoft Exchange Server 5.5 Service Pack 1, when used with:
 * Microsoft Windows 2000 Standard Edition
 * Microsoft Exchange Server 5.5 Service Pack 2, when used with:
 * Microsoft Windows 2000 Standard Edition
 * Microsoft Exchange Server 5.5 Service Pack 3, when used with:
 * Microsoft Windows 2000 Standard Edition

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This article was previously published under Q255269



SYMPTOMS
If the Dcpromo process runs on a Windows 2000 Server-based computer that is running Exchange Server 5.5, the Exchange Server services may not start. Also, Post Office Protocol version 3 (POP3) and Internet Message Access Protocol (IMAP) clients may be unable to authenticate when those clients connect to the Exchange Server computer. The following event may be found in the Application Event Log on the Exchange Server.

Event ID: 13003 Source: MSExchangePOP3 Type: Error Category: Authentication Description: A required privilege is not held by the client



CAUSE
This problem can occur because, when the Dcpromo process is running, the Security Accounts Manager (SAM) database (which contains all of the local accounts) is removed and the security policy of the Exchange Server service account is altered.



RESOLUTION
To resolve this problem, start the Services Microsoft Management Console (MMC) and reassociate the correct user name and password with each of the Exchange Server services. You must reinstall Exchange Server Service Pack 3 for POP3 and IMAP clients to work properly.



STATUS
Microsoft has confirmed that this is a problem in Windows 2000 Server.

Additional query words: Windows 2000, DCPROMO, Exchange 5.5

Keywords: kbprb KB255269

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