Terminal Server 2003 connection problem

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I have Windows 2003 Terminal Server installed and I was able to access it from my laptop yesterday using the standard XP Remote Desktop Connection. Today, I get the following error message on my laptop when I try to actually login, after the connection to the Terminal Server is made:

 

"You do not have the proper encryption level to access this Session" The title of the Window dialog box is: Logon Message.

 

Any ideas on what I might have done on the Windows 2003 side of the equation that may have caused this ? Many thanks to all in advance.

 

[clonestar 0]

Thanks but I found the difficulty.