Network Level Authentication is an authentication method that can be used to enhance Remote Desktop Services Session Host server security by requiring that the user be authenticated to the RD Session Host server before a session is created.

Remote Desktop Connection

Remote Desktop Connection

Network Level Authentication completes user authentication before you establish a remote desktop connection and the logon screen appears. This is a more secure authentication method that can help protect the remote computer from malicious users and malicious software.Watch movie online The Transporter Refueled (2015)

Network Level Authentication will disconnect XP SP3 Remote Desktop Connection with the following error message

The remote computer requires Network Level Authentication, which your computer does not support.For assistance, contact your administrator to technical support.

Remote Desktop Disconnected

Remote Desktop Disconnected

To enable Network Level Authentication on a XP SP3 client some registry settings must added which can be found in KB951608

The registry settings were tested using the Registration Entries (.reg) file below.

Windows Registry Editor Version 5.00

"Security Packages"=hex(7):6b,00,65,00,72,00,62,00,65,00,72,00,6f,00,73,00,00,


So after adding the registry settings and rebooting the workstation the following error message may appear if you connect to the Remote Desktop Services Session Host using an IP address, the error should not appear if you use the hostname of the remote computer.

An authentication error has occurred (0x80090303)

Remote Computer:

Remote Desktop Connection 0x80090303

Remote Desktop Connection 0x80090303

To fix this you need to download and install KB953760 which updates the following files

File name File version File size Date Time Platform
Kerberos.dll 5.1.2600.5615 299,520 05-Jun-2008 13:50 x86
Msv1_0.dll 5.1.2600.5749 133,120 23-Jan-2009 17:05 x86

Once WindowsXP-KB953760-x86-ENU has been installed and files updated you can access the Remote Desktop Services session using an IP address.


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