Microsoft KB Archive/171435

= XFOR: POP3 Logon Attempt Fails with Event 11202 =

Article ID: 171435

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 5.0 Standard Edition

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This article was previously published under Q171435



SYMPTOMS
POP3 users are unable to log on to a Microsoft Exchange Server computer. When the logon attempt fails, an event 11202 is logged in the application event log.



CAUSE
This problem occurs when the Microsoft Exchange Server service account does not have the  Windows NT user right. This only happens if the client tries to use basic (clear text) authentication.

Below is an example of the type of event you will see in the Event Viewer:   Event ID: 11202 Source: MSExchangePOP3 Type: Failure Audit Description: Logon attempt from to has failed: HrLookupCredentials call failed with error: A required privilege is not held by the client. You can use telnet to verify that the Microsoft Exchange Server service account is missing the  right. To test this with telnet, perform the following steps:


 * 1) On Windows NT or Windows 95, open a command prompt.
 * 2) At the command prompt, type .

You will get a connection to the computer running Microsoft Exchange Server. The server will issue a greeting banner that may appear as:    +OK Microsoft Exchange POP3 Server version 5.0.1457.10 ready The sample telnet session below demonstrates how to verify that the Microsoft Exchange Server computer is missing the required right. In this sample, lines starting with S> are sent by the server and lines starting with C> were sent by the client (telnet).   S> +OK Microsoft Exchange POP3 Server version 5.0.1457.10 ready C> USER S> +OK C> PASS S> -ERR A required privilege is not held by the client. If the Microsoft Exchange Server service account does not have the  user right, an error will be returned after the PASS command.



RESOLUTION
To grant the appropriate right to the Microsoft Exchange Server service account, perform the following steps:


 * 1) Start User Manager for Domains.
 * 2) From the Policies menu, select User Rights.
 * 3) Select the Show Advanced User Rights check box.
 * 4) From the list of rights, select Act as part of the operating system.
 * 5) Select Add.
 * 6) Select the Show Users button.
 * 7) Select the Exchange Server service account.
 * 8) Click Add.
 * 9) Click OK until you have completely exited all dialog boxes.

Keywords: kbhowto kbusage KB171435

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