UMDS must be of a version that is compatible with the Update Manager server.

Update Manager can work with a certain UMDS version if the metadata and structure of the patch store that UMDS exports is compatible with Update Manager, and if the data can be imported and used by the Update Manager server.

Because Update Manager 5.x does not support guest operating system patching and vCenter Server 5.5 does not support ESX/ESXi 3.5 host operations, UMDS 5.5 does not download patches for guest operating systems and ESX/ESXi 3.5 hosts. UMDS 5.5 is compatible and can work with Update Manager 5.0, Update Manager 5.1, Update Manager 5.5 and their respective update releases.