After a while I tried today to connect to a Windows 7 computer using Remmina version 1.2.0 from my Kubuntu 18.04 and received this error message:
Telling that a requested an H264 GFX mode for the server ….but that my library libfreerdp does not support H264.
After a bit of research I found that one needs only to use a different colour depth and then it would work again – unfortunately, it is not that easy to find that in the Quick connect settings or in the preference. The way to go is to click on the + on the top left. Yes, look carefully, there is a + in the upper left corner!!! Right next to the ‘RDP’ – Dropdown menu.
However, once we clicked on that we get the old dialog like this here and we can change the colour depth to True colour or something similar instead of GFX…