On XP, the Guest account can run the RDP client to connect to a remote RDP server, but when I try the same under Vista Business (with all updates installed) I get this:
I can run mstsc
manually with 'Run' on the Start Menu, but although it runs, nothing happens at all when I click 'connect'.
Everything works fine logged in as any other account, it only fails as 'Guest', and this is on multiple clean installs of Vista.
Is there something in the Local Policy that can be tweaked to allow the RDP client as Guest?
edit: there is also a message in the rdp client itself:
and I get this error when trying rdp+: