If you get the error “The operation is not supported on the selected inventory objects. Check the events for the objects selected for the operation” when you try to remediate a host you will also find the following entry in the eventlogs:
- The host is part of VMWare HA.
- The host is part of DRS Cluster
- The host is enabled with Admission Control.
- Disable all of the above services
- Scan the host for Updates.
- Remediate the host again and the Remediate entity should do its job.