hi
im having same issues, i have 2 pc local both windows 7 ultimate. pc1 is not on domain, pc2 was on the domain, uses password which is saved in the rdp.
from pc1 trying to rdp pc2, was able to do for long time but not recently. tried all kind of tricks,
i ve installed teamviewer so i can check if really i can connect,so with teamviewr (tv as short) from pc1 to pc2 i can logon.
as soon i connect with tv from pc1, then i try rdp from pc1 to pc2 and Bingo! it works. i close tv, rdp connection stays. i can rdp again and again AS LONGER I dont switch off pc2!!! if i do,im unable to connect via rdp!
looks like security issues, but establishing a connection with tv, it removes these issues and then rdp works! (tried every time!)
need a permanent solution though...
thanks.