Although Windows 7 has better access control than Vista or XP if some one already logged on windows 7 then you are trying to login via remote desctop connection you will probably receive that error.
To allow 2 sessions simultaneously , please download that fix.
INSTALLATION INSTRUCTIONS (READ CAREFULLY)
Extract the files to C:Win7RDPfix
Navigate with windows explorer to the following folder.
Right Click on "install.cmd" and select "Run as Administrator"
Wait for the script to run entirely.
You should receive the outpoot bellow.




Is there a fix for the production version of Windows 7? The fix described above does not work on the production version.
Thanks.
Brian ,
It may be related to FW or something else, it works fine here.
I already use it on few windows 7 clients
This works fantastic!! Thanks soooooo much for sharing.