XADM: Exchange Server 5.5 Fix Setup.exe Does Not Work on Windows 2000 Cluster Server

When you try to run an Exchange Server 5.5 Setup.exe file from a fix on a Microsoft Windows 2000 Cluster Server, you may receive the following error message:

This issue can occur because when you run a non-RTM (release to manufacturing) Setup.exe file on a Cluster Server, the Setup.exe file first determines whether the Cluster Server is at the correct Microsoft Windows NT version and service pack. If the server is running Windows NT 4.0 and Windows NT 4.0 Service Pack 3, a set of rollup fixes needs to be applied before Exchange Server 5.5 can be installed. The Exchange Server Setup.exe file checks the current service pack version. If the current service pack version is earlier than Service Pack 4, the Setup.exe file determines whether the fixes have been applied. If the fixes have not been applied, the error message in the "Symptoms" section of this article is displayed. Because, at this time, no service packs have been released for Windows 2000 Server, the Setup.exe file finds no service pack entry in the registry, and Setup does not work.

To resolve this problem, obtain the latest service pack for Exchange Server 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 4.