Blackscreen while updating to 2033

When updating to 2033, the appliance console screen in virtual environments can stay black (e.g. with a blinking cursor)

This error can occure, when the appliance runs in Generation 1 (HyperV) or on a Xen Server 7.1 without any updates.

Please make sure, that the virtual environment host itself has the latest updates and that the virtual requirements are met (especially in Hyper V the G2 Appliance)