After Global Catalog Server rebooting, the BlackBerry Enterprise Servers (4.X) have lost their connections to the Global Catalog servers

SYMPTOMS: After Global Catalog Server rebooting, the BlackBerry Enterprise Servers (4.X) have lost their connections to the Global Catalog servers.

Per RIM,

The BlackBerry Enterprise Server has lost its connection to the Global Catalog server and did not receive a referral.

Resolution

This issue has been identified by Microsoft and a hotfix has been released. For more information, see article 929439 on the web site.

Note: As part of this resolution, Global Catalog server referrals on the Microsoft Exchange server must be turned on.

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Workaround

If the BlackBerry Enterprise Server has lost its connection to the Global Catalog server, you can restart the BlackBerry Enterprise Server or the BlackBerry Dispatcher and BlackBerry Controller service to reconnect to the Global Catalog server.

Important: Restarting certain BlackBerry Enterprise Server services will delay email message delivery to BlackBerry smartphones. For more information, see KB04789.

Per Microsoft:

A MAPI program may not obtain a referral server when the global catalog server to which the MAPI program points is shut downA MAPI program may not obtain a referral server when the global catalog server to which the MAPI program points is shut down. Microsoft has released hotfix to address the issue from the following link:

http://support.microsoft.com/kb/929439/en-us

Note:

You must create the EMSAB_UserAuth_Credentials registry entry on the Exchange 2003 server where the hotfix is installed for this hotfix to work. With the EMSAB_UserAuth_Credentials registry entry set to the value 1, the MAPI provider will never enter the user credential state. When the global catalog server is still shutting down, MAPI clients that have this registry entry will continue to obtain the MAPI_E_NETWORK_ERROR error code. However, as soon as the global catalog server has finished shutting down, and the Exchange 2003 server has established a connection with a new global catalog server, the MAPI client will obtain the expected MAPI_E_END_OF_SESSION error code.

Important When this registry key is set on an Exchange 2003 server with the hotfix installed, the user credential state cannot be entered by MAPI clients that are running on the server. This hotfix will prevent the MAPI clients that require user interface from connecting across domain boundaries, where it is expected that users can be prompted for credentials. Make sure that you do not set the registry entry on Exchange 2003 servers when the UI prompt for credentials is desired by MAPI clients that are running on the servers. This hotfix does not alter the behavior of Exchange 2003 as a MAPI server. Also, it does not affect Outlook clients or any other MAPI clients that are running on other computers in which the hotfix and registry key have not been applied.

To set the EMSAB_UserAuth_Credentials registry value, follow these steps:

1. Click Start, click Run, type regedit, and then click OK.
2. Locate the following registry subkey:
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Exchange\Exchange Provider
3. On the Edit menu, point to New, and then click DWORD Value.
4. In the Details pane, type EMSAB_UserAuth_Credentials, and then press Enter.
5. Right-click EMSAB_UserAuth_Credentials, and then click Modify.
6. In the Edit DWORD Value dialog box, click Decimal in the Base area.
7. In the Value data box, type 1, and then click OK.
8. Exit Registry Editor.

Prerequisites

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

836993 (http://support.microsoft.com/kb/836993/ ) How to obtain the latest service packs for Exchange Server 2003

Restart requirement

You do not have to restart your computer after you apply this hotfix. However, the following services are automatically restarted when you apply the hotfix:

• Microsoft Exchange Information Store service
• Microsoft Exchange MTA Stacks
• Microsoft Exchange System Attendant

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.

Collapse this tableExpand this table

File name	File version	File size	Date	Time	Platform
Emsabp32.dll	6.5.7652.15	173,568	22-Feb-2007	02:55	x86