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Can't Unlock Preference Panes

I noticed that my monitor didn't go to sleep last night, I opened System Preferences, pulled up Energy Saver but I am unable to unlock that or any other preference pane... I click on the lock, it flashes, but no dialog window ever appears asking for my admin password.

Posted on Aug 8, 2011 2:50 PM

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112 replies

Nov 20, 2011 4:40 PM in response to Mangeurdpommes

Did some more testing and to recap:


  • It only works with root. I created a new admin but the new admin cannot unlock either, not when the new admin is logged in and not when logged in as another trying to authenticate with the new admin.
  • I can lock the Directory Utility and then unlock as admin, so for unlocking the Directory Utility I don't need root. Isn't that super weird?
  • Cannot install software that needs admin priveleges unless I specify the root account.

Jan 29, 2012 8:01 AM in response to Sebast1aan

Ok, not sure if someone on this thread is testing 10.7.3. Its release notes says it`s dealing with SmartCards issues. I tried the following updates:


10.7.3 11D46: the problem stopped happening and I could insert CAC token and unlock system prefs without any issues. Then...


10.7.3 11D48: everything went back again... no unlock possible.


10.7.3 11D50: same thing, all broken.



If the final 10.7.3 won't solve it, I think I will have to timemachine it back to it as it's not possible to reinstall a previous version of the updates.

Feb 27, 2012 1:13 AM in response to Sean L.

I am using Estonian ID card and its software. Used to have same conflicts while using ID card, but after updating OSX to 10.7.3 issues were resolved.


Plugged SCR, unplugged, plugged again and inserted smart card (Estonian ID card) into reader. Opened Safari and authenticated myself to some webpage - System Preferences panel worked as it had to. In other words I was able to unlock/lock/unlock/../unlock it as many times as I wanted.


(makes me curious. how did problems find a solution in my OSX and same time you guys are telling that update to 10.7.3 made no difference)

Mar 23, 2012 5:21 PM in response to woomy

For everyone who's thinking about re-installing Lion for this problem...let me just add that I have completely wiped and restored Lion (for another issue that I created myself) and the problem was not fixed.


Like some posters, I sometimes use a CAC on my computer, but that doesn't SEEM to be the problem. I also use Thursby's PKCard software, which another poster mentioned, and I'm going to test and see if that's the issue, but I suspect not.


For me, the problem happens only when the computer wakes from sleep. From a clean boot, I can always unlock my preferences. However, if the computer sleeps (ex, closing the lid), the preference panes are locked. I'm not sure this happens 100% of the time, but I'm about to find out.


Anyway, don't rush to reinstall, it's not a reliable fix.

Mar 31, 2012 5:19 AM in response to stephen.bradley

Well, after a lot of fooling around with different things, I take back what I said previously. The problem most definitely IS the CAC.


When Apple removed CAC support in 10.7, it looks like they did it by just removing the libraries needed to access the CAC, but left the operating system hooks in place. Prior to 10.7, if you had fully enabed CAC on your system, you'd use your CAC/pin to do things like unlock system preferences. Well, the code for that is still there, they just removed CAC support.


So if you install third-party CAC support - Thursby PKCard, CAC_KEY, or any of those other things, or if you still have the libraries from Snow Leopard, once you put in and access your CAC (by using it on a website or signing an email) the system wants to use it to authenticate other things too (like system prefs). Unfortunately those third party solutions don't support the system hooks, so it doesn't work.


What's worked for me recently is firing up activity monitor and force-quitting securityd and the processes that my CAC software spawns (I use cac-key). Once I do that, I'm usually able to get my prefs unlocked without rebooting.


Buying and installing something like Thursby's AdmitMac PKI should solve this, since it's designed to support the entire system from login through active directory integration. But it's a bit pricey at $200....

Can't Unlock Preference Panes

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