Guest Customization not working

Hi,

i try to deploy some windows server 2019 and 2016 templates to our vCloud Director library, but i cannot get the guest customization working.

I installed a new VM in a newly created vApp with latest VMware Tools, installed windows updates and did some settings (RDP, Windows Firewall etc).

i enabled the following settings in Guest OS Customization:

Then i added the vApp to the library:

When i create a new VM from this template, the hostname is not changed, the password is not set. I can see in the logfiles c:\windows\temp that the customization did some stuff (like executing the windows activation script), but password and hostname are not set.

Any hint?