Since re-installing our Domain Controller (Windows Server 2008R2) and re-creating all of our group policies I have stumbled across an strange issue.
I have set a DC up before an enforced a security zone setting by GPO and I remember that IE wouldn't let the user reset the zones to default. That paired with the fact that I haven't set any security zones options up on any of the new GPO's leads to the conclusion that maybe I need to explicitly set the security settings to default via GPO?
Is there a way of doing that? Maybe by using GP Preferences? All workstations are running a minimum of IE7 and Windows XP Pro SP3.
To help explain the problem, this is the screen used to reset the security settings: