Remote Desktop Connection Error

For a week now, when I try to use my Remote Desktop on my Windows 7 Pro SP1 computer to connect to any computer, I get the following error "An authentication error has occurred. The requested security package does not exist. Remote computer:xxxxxx."

The only thing that has changed is typical, recent automatic updates and I did use this computer to help me with a recent migration from SBS 2003 to SBS 2011. I have googled this and found a registry change which I did and had no success. I also did a system restore to a few weeks back and no change.

Any additional help is appreciated.
xav1963Asked:
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AnuroopsunddConnect With a Mentor Commented:
are you talking about this key?

HKLM\system\currentcontrolset\control\LSA\security packages

Adding the "tspkg" value solved it.
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xav1963Author Commented:
yes...that is the key and no success in my case...
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xav1963Author Commented:
wait.. I stand corrected... I had tried adding both values ... tskpkg and pku2u... and that didn't work... but just adding the one got it... thx...
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AnuroopsunddCommented:
in Remote Desktop Connection window..

click the small arrow icon  (in left bottom)
click on advanced tab
under "if server authentication fails"  -- select "warn me" or  "connect and don't warn me"
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AnuroopsunddCommented:
Also you can install remote deskop connection manager and try.

http://www.microsoft.com/download/en/details.aspx?id=21101
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