Anyway, was it resolved to install the RDP plugin? What was the specific solution for this?
I managed to install rdesktop and it worked on Windows 2008 R2 servers, but it's not enough. Please, I need to install Remmina for RDP protocol access on Windows 2012 R2 or higher servers.
On Ubuntu it works fine, but I need it on a very light thinclient where I installed Tiny Core. Also, Remmina has a very user-friendly interface.
Thanks!