I am an admin but several preferences are grey and say "your system administrator has not given you access to this preference pane" I have admin rights on my mac laptop at work.

In the last several days I have lost access to several system preference pane items.  Most notably "security and privacy" and notifications.

The icons are now grey and when I hover over them they display "your system administrator has not given you access to this preference pane"

How do I re-enable these preferences?
On ElCapitan

With System Prefs not running:


Go to: Hard Drive Name/Library/Managed Preferences/administrator
Delete or (rename to *_old) com.apple.systempreferences.plist
Run System Prefs, all should now be visible