Black areas when using RDP and Hyper-V VM console

Question

OK, So when I use RDC (Remote Desktop Connection) to connect to a remote machine, the screen is full of random black areas. The way I managed to resolve this was by unchecking Persistent bitmap caching, as illustrated here:

This same issue occurs when I open a Hyper-V VM console, and to manage that it is necessary not to use Enhanced session mode. This is set up in the Hyper-V Settings > Enhanced Session Mode Policy and Hyper-V Settings > Enhanced Session Mode.

This is what the screen looks like with enhanced session mode:

And this is the same screen with enhanced session mode turned off:

While these solutions do solve my immediate issue, which is not to have those pesky black rectangles, I wonder what could be the cause of this, and, more importantly, is there a way to resolve this issue without turning off enhanced session mode in Hyper-V, as I am really benefiting from the functionality it brings?

Thanks!

Answer 1

This looks like cache corruption on the client side. Can you please stop all MSTSC connections, then remove the following folder:

%USERPROFILE%\AppData\Local\Microsoft\Terminal Server Client

That should clear the local cache and you should be free of black squares.