Microsoft KB Archive/937031

= Event ID 1036 is logged on an Exchange 2007 server that is running the CAS role when mobile devices connect to the Exchange 2007 server to access mailboxes on an Exchange 2003 back-end server =

Article ID: 937031

Article Last Modified on 11/26/2007

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APPLIES TO


 * Microsoft Exchange Server 2003 Standard Edition
 * Microsoft Exchange Server 2003 Enterprise Edition

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SYMPTOMS
In a Microsoft Exchange Server 2007 and Microsoft Exchange Server 2003 mixed environment, an Exchange 2007 server is running the Client Access server (CAS) role. When mobile devices connect to the Exchange 2007 server to access mailboxes on an Exchange 2003 back-end server, the mobile devices cannot access their mailboxes. These mobile devices also may be prompted multiple times for a username and password. This occurs even though you enabled Integrated Windows authentication on the Microsoft-Server-ActiveSync (MSAS) virtual directory in the Internet Information Services (IIS) Manager on the Exchange 2003 back-end server. Additionally, the following event is logged on the Exchange 2007 server that is running the CAS role: Event Type: Warning

Event Source: MSExchange ActiveSync

Event Category: Configuration

Event ID: 1036

Description:

The proxy request has failed to authenticate on. Please ensure that Integrated authentication is turned on.



CAUSE
This problem occurs because the DS2MB process on the Exchange 2003 back-end server turns Integrated Windows authentication off.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
Microsoft Exchange Server 2003 Service Pack 2 (SP2) must be installed before you apply this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

836993 How to obtain the latest service packs for Exchange Server 2003

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace a previously released hotfix.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.



Steps to enable Integrated Windows Authentication after you install hotfix 937031 on the Exchange 2003 back-end server
To work around this problem, turn on Integrated Windows Authentication. To do this, follow these steps:  Start Exchange System Manager. Expand Administrative Groups, expand Administrative_Group_Name, and then expand Servers. Expand Your_Server_Name, expand Protocols, and then expand HTTP. Expand Exchange Virtual Server, right-click Microsoft-Server-ActiveSync, and then click Properties. Click the Access tab, and then click Authentication. Click to select the Integrated Windows Authentication check box.</li> Click OK two times. To verify that this successfully replicated to the metabase on the Exchange server, follow these steps: <ol style="list-style-type: lower-alpha;"> Open the Internet Information Services (IIS) Manager under Administrative Tools.</li> Expand the Computer, expand Web Sites, and then expand Default Web Site.</li> Right-click Microsoft-Server-ActiveSync, and then click Properties.</li> Click the Directory Security tab, and then select the Edit button under Authentication and access control.</li> Verify that the Integrated Windows Authentication check box is selected.

Note If this check box is selected, you have successfully replicated the change that was made in the Exchange System Manager to the metabase on the Exchange server.</li> Click Cancel two times, and then exit Internet Information Services (IIS) Manager. You can now test synching with your mobile device.</li></ol> </li></ol>

<div class="status_section">

STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Additional query words: EAS Activesync Mobile CAS DS2MB

Keywords: kbexpertiseinter kbhotfixserver kbqfe KB937031

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