I'm having the exact same problem, read elsewhere to turn the brightness down on the monitor. Am trying that now.

Thanks Carlieo for your solution which worked great.

For others and for clarity, it is actually: Edit Group Policy … Computer Configuration > Administrative Templates >Windows Components > Remote...

rivre: Thanks for your post. Unplugging my PC and plugging it back in after a couple of minutes fixed the problem for me too. The same thing, I was fiddling with the USB connectors and must have...