Are you using the View CLI as an admin on connection server, and then your command  That usually works for us.  

Thanks for your response, but this has nothing to do with Horizon PowerCLI. vdmadmin can be used from a Windows command prompt.

With vdmadmin you can flawlessly exlude 'trusted' domains, but with 'untrusted' domains unfortunately not. This has consequences for your design .

I feel a feature request coming on:

- define domain list order

- exclude untrusted domains.

I was hoping that it was just an issue of not running vdmadmin in an elevated context.   I have run vdmadmin in powershell, but have gotten used to using View CLI shortcut.  

Hope you can find some help.   It may be worth creating a support case.