What device are you using?
What keyboard is in use on this Android Device?
Is it set to English language?
If there are several keyboards available on this device, can you please try all of them and let us know if it worked for you
I have same trouble, Android Galaxy TAB 8.9 android Keyboard. When I log in to Win7 with the same password all works, only on WinSrv2008R2 this problem occures. PRO version.