I'm using a Dell Laptop, connected to a Kensington system dock connected to a 27in 4k monitor.
When I launch Maya or Motion Builder on my laptop not connected to the dock or monitor it starts just fine. If I then connect it to my dock it displays just fine on my 4k monitor.
When I launch Maya or Motion Builder on my laptop already connected to the dock/4k monitor it wont start.
I have a work around but I certainly don't want to keep unplugging things to get my software to launch.