Windows Security Center uses Windows Management Instrumentation (WMI) to acquire information about the installed Anti-virus and Firewall applications, and their current status. In some cases, the Security Center may show outdated or misleading information due to problem in WMI repository. Here is a case where the Windows Vista Security Center reports incorrect information.
Fig 1: Security Center incorrectly reporting anti-virus/firewall info.
In the subject computer, the McAfee firewall was already uninstalled, but the Security Center still lists it. In some cases the Windows Vista Security Center may not detect installed Anti-Virus or firewall. (REF KB944175)Read more