The Test-OwaConnectivity command returns a warning message in Exchange Server 2007 when there is a disjoint namespace

Consider the following scenario:

• In a Microsoft Exchange Server 2007 environment, the NetBIOS domain name does not match the first part of the fully qualified domain name (FQDN).
• Microsoft Office Outlook Web Access is configured to use an authentication method other than forms-based authentication (FBA).
• You run the Test-OwaConnectivity command to verify that Outlook Web Access is running correctly.

In this scenario, the Test-OwaConnectivity command returns the following error message:

This issue occurs because Exchange Server rebuilds the network credential and uses only the NetBIOS domain name when non-FBA authentication methods are used. Authentication fails because the NetBIOS domain name does not match the FQDN in a disjoint namespace scenario.

To resolve this problem, install Update Rollup 7 for Exchange 2007 Service Pack 1.

For more information about Update Rollup 7 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic: For more information about how to obtain the latest Exchange service pack or update rollup, see the following Exchange Help topic:

For more information about the Test-OwaConnectivity command, visit the following Microsoft Web site:For more information about disjoint namespace scenarios, visit the following Microsoft Web site:For more information about forms-based authentication, visit the following Microsoft Web site:

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.