I have two machines and a vulnerability that is applicable to both systems. However, the vulnerability only shows up on one machine. The machine working as normal is a Windows 2003 Server with SP1, the other that is not identifying the vulnerability is a Windows XP workstation with SP2-3. It seems unable to identify which SP is installed. I believe the authentication is not working correctly and that is why it is not identifying all the vulnerabilities. Both systems are setup with windows authentication via AD. Both should be the same setup.