KB: Enable Windows XP Remote Desktop Connection to Windows Vista / Windows Server 2008 requiring Network Level Authentication

Problem: The following error is shown in Windows XP Remote Desktop Connection when connecting Windows Vista / Windows Server 2008 requiring Network Level Authentication.

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Solution: Enable CredSSP Security Service Provider in Windows XP SP3 which is disabled by default.

  1. Install Windows XP SP3
  2. Follow the instructions in KB951608 to turn on CredSSP http://support.microsoft.com/kb/951608/

 

More Information:

http://support.microsoft.com/kb/951616/