Download OVF Tool (My VMware Account benötigt):
https://www.vmware.com/support/developer/ovf/

"C:\Program Files\VMware\VMware OVF Tool\ovftool.exe" ova-template-name.ova newova-template-name.ova
"C:\Program Files\VMware\VMware OVF Tool\ovftool.exe" ovf-template-name.ovf new-ovf-template-name.ovf

Quelle:
https://kb.vmware.com/s/article/53260