Microsoft KB Archive/834637

= The &quot;Enable Forms Based Authentication&quot; check box is unavailable in Exchange Server 2003 =

Article ID: 834637

Article Last Modified on 10/25/2007

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APPLIES TO


 * Microsoft Exchange Server 2003 Enterprise Edition

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SYMPTOMS
When you open the Exchange Virtual Server Properties dialog box in Exchange System Manager, and then click the Settings tab, you notice that the Enable Forms Based Authentication check box is unavailable (appears dimmed). Therefore, you cannot enable forms based authentication on the HTTP virtual server.



CAUSE
This issue occurs if Microsoft Exchange Server 2003 is installed on a server cluster. Forms based authentication is not supported on a server cluster.



WORKAROUND
To work around this issue, configure forms based authentication on an Exchange 2003 front-end server. Then configure the users who have mailboxes on the server cluster to connect to their mailboxes by using the Exchange front-end server that has forms based authentication enabled.



MORE INFORMATION
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

830827 How to use forms based authentication with Outlook Web Access clients in Exchange Server 2003

Additional query words: XADM, greyed out, gray, grayed MSCS

Keywords: kbprb KB834637

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