I use remmina all the time and this is driving me mad. I can't figure out how to disable the WINKEY key.
When I connect to a remote computer (a Windows computer) from Ubuntu 13.10 & Remmina, when I press E Windows Explorer opens. When I press L the computer locks, D shows the desktop, and so forth. It's as if the WINKEY key is stuck on my keyboard.
I am going crazy having to use the character map. Worse yet, now with the ever-so-awesome Windows 8 start menu, or lack of, I cannot even browse to the character map.
I have to type Character Map. but if anyone uses Windows, you'll know what happens when you hold the WINKEY and start typing c-h-a-r-a-c-t-e-r m-a-p.
How to solve this ?
Comment moved to the answer because it seems to work.
Remmina 0.99.9 works ok for me, but I use it to connect to Linux via VNC only.
There is a bug that can be related: https://bugs.launchpad.net/ubuntu/+source/remmina/+bug/993432 --- is this your problem?
In that bug, one user says that clicking two times WINKEY rapidly solves the problem (open and close windows menu).