Problem

When you’re building (or already) have a active/passive Exchange 2007 cluster and you try to move the cluster to the other node, it’s possible you receive an error like this :

The installation on node ‘NODE’ is inconsistent. ConfiguredVersion=, UnpackedVersion=8.2.176.2. An upgrade might not have completed successfully.

As the error already explains, there is a version problem. To understand this problem you need to know a little bit about the installation steps Exchange does while installing. Read more »