Failover Cluster Administrator Extension DLLs

[Support for the Failover Cluster Administrator was removed in Windows Server 2008.]

Failover Cluster Administrator extension DLLs (also called "extension DLLs" or just "extensions") extend the functionality of Failover Cluster Administrator to support new types of cluster objects. Third-party developers implement extension DLLs to add context menus, property sheets, and wizard pages to the Failover Cluster Administrator user interface. Typically, extension DLLs are created as part of creating a resource type, but extensions can be created for any cluster object. For more information, see Implementing Extension DLLs.