Product: VMware vCenter Converter Standalone -- Error 1920.Service VMware vCenter Converter Server (vmware-converter-server) failed to start. Verify that you have sufficient privileges to start system services.
my solution for this problem was to create a group called "Domain Admins" in the active directory.
The installer checks the group when starting the service. If the group do not exist in the active directory you get this error.
Maybe this problem is only on german systems. I have Windows Server 2003 R2 SP2. And my server acts as domain controller too.