Zend certified PHP/Magento developer

Remote Desktop not working after Windows Update

I’ve updated Windows recently on my Windows Server 2019 Standard, 1809. Since then, Remote Desktop is not working anymore. I can connect, but then the screen stays either black or it shows an improper image, like the following. But the login text boxes never appear. Since this incident I work with VNC. But it would be great if Remote Desktop could work again!

Screen after connecting with RDP