Topic Last Modified: 2006-02-13

The Microsoft® Exchange Server Analyzer Tool reads the following registry key to determine whether Microsoft Windows® Server 2003 is installed: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\

The Exchange Server Analyzer also performs the following queries:

The Exchange Server Analyzer displays an error if the following conditions are true:

The version of Mountmgr.sys installed on the cluster node may cause volume mount point failures. This problem occurs because of a problem in the Mountmgr.sys driver. This is an intermittent timing problem that can occur when a volume arrives to be mounted to a mount point.

Generally, this problem does not occur in a non-clustered environment. In a non-clustered environment, the timing of the volume mount process is different.

For more information about this issue, see Microsoft Knowledge Base article 898790, "Volume mount points on disks in a server cluster may intermittently become unavailable after you install Windows Server 2003 Service Pack 1" (