I'm using the Microsoft RDP app for android, trying to connect to a Windows 8.1 Pro 64bit. I've enabled require network authentication. I have McAfee Internet Security, and the firewall is configured to allow RDP connections on port 3389. With the firewall ON, I get Error 0x204. With the firewall OFF, I get Error 0x207, although the first time I was prompted with an unknown certificate warning before RDP tried to authenticate. I switched from using a specific username/password to Ask Every time. After that the 0x207 error popped up.
Ideas?