A MAPI application does not work correctly if Exchange 2007 is installed on a Windows Server 2008 server

Consider the following scenario.

• You install Microsoft Exchange Server 2007 Service Pack 1 (SP1) on a server that is running Windows Server 2008.
• You deploy a MAPI application that registers itself for notifications.

In this scenario, the MAPI application does not work as expected. However, the same MAPI application works correctly if Exchange 2007 is installed on a server that is running Windows Server 2003.

This problem occurs because the EnumProtocols function does not work correctly in Windows Server 2008 and was replaced by the WSAEnumProtocols function. Exchange Server 2007 uses the EnumProtocols function when the MAPI application calls the IMsgStore::Advise method.

Update information

To resolve this problem, install Update Rollup 4 for Exchange Server 2007 SP1. For more information about Update Rollup 4 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:

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

For more information about the IMsgStore::Advise method, visit the following Microsoft Web site: For more information about the EnumProtocols function, visit the following Microsoft Web site: For more information about the WSAEnumProtocols function, visit the following Microsoft Web site: