Cannot RDP to Windows 7 with Remmina on 12.04 [duplicate]

Since I upgraded to 12.04, I am unable to RDP to a Windows 7 server. All I can see is a pop-up that says "Uable to connect to RDP server ". I am able to RDP using Vinagre, so that rules out any issues with my router or the Windows server. As far as I can tell, there are no logs from Remmina and the Debug window shows a blank. Any one got any ideas? Thanks.

I too had the problem that I could connect to a Windows 7 machine and suddenly (after weeks) I got this error: Unable to connect to RDP server

In my case I deleted the entry from ~/.freerdp/known_hosts and it then worked fine.

Click Advanced tab in your Remote Desktop Preferences and choose RDP in Security drop down menu and save.

So far it works for me.

I had a similar problem, getting the "Unable to connect to RDP server" message using Remmina and Ubuntu 12.04 to a Windows 7 machine.

It worked fine for weeks and then suddenly stopped.

What fixed it was going to ~/.freerdp/certs and deleting the problem server from that file.

The next time it connected, it asked for a new cert and worked fine.

I had this problem. Like you I had no output when running remmina on the command line and the debug window was blank. I solved this by removing the line in the file ~/.freerdp corresponding to the problem server.

I have no idea why it worked, but I started changing settings one at a time. When I edited the connection properties, I looked on the "advanced" tab and changed the security from "negotiate" to "TLS", and voila, everything works.

Strangely, "negotiate" still works on the laptop, but at least I'm back in business with my bigger monitor :)