exclude user/machine from apply a GPO

To exclude user/machine to apply a GPO, in the Security filtering of the GPO add the user account/machine account and set the permissions to deny GPO.

For more information:

http://technet.microsoft.com/en-us/library/cc781988%28WS.10%29.aspx

http://adisfun.blogspot.com/2009/04/security-filtering-and-group-policy.html

exclude user/machine from apply a GPO