We are using ZENworks to perform a global upgrade of our Citrix client.
Unfortunately 800 machines worldwide are still running on Windows XP.
Since the upgrade needs a computer reboot (to activate the SSO option) we need a prompt
before installing the bundle.

In Windows 7 this is no problem.
However in Windows XP it seems like users only get the prompt to warn them randomly.

I already checked the option when to prompt but this has been set to "always".

Can anybody help me out?