security update 2018-02 10.13.6 installation log loop

I attempted to install Security Update 2019-2 10.13.6.

I'm running an older 2011 27 inch iMac and i experienced the same blackout loop that most have described here. The download seemed to get stuck, or at least, that was the result of trying to install it. I ended up restoring the OS from the Online option and I was able to get the machine back up and running.

Now my Mac MAIL app crashes nearly everyday when i delete mail from the Mail trash, which may be an unrelated issue to the update. I had a very difficult time getting the machine back up and running this time, it took nearly a day, this may have been the worst OS download experience that i have had in 25 years.

I have 2011 15"MBP. Same Problem. Going to Apple tomorrow to see if quick fix. If not restore using last time machine backup. First time ever had this issue.

The update just got pulled by apple.

The new version that popped up in the MAS installed just fine, just tried it.

Does this mean my already downloaded bad update will get re-written/downloaded and it will be safe to install after they re-release it .... or .... Do i have to go in and find the download and delete it now and wait for the new one?

Glad to hear that it worked for you Kurt. Can I ask if you a question though?

After you installed the security update from the App Store which requires a restart, did you shut the device down and then did a fresh reboot? Some people have reported that the install went well at first. But then the problem only appeared after the device was shut down for a period of time and then restarted later in the day or the next morning. We have two other devices (1 desktop and 1 laptop) requiring this update and just wanted to know that you were successful at shutting down and restarting your device without any errors. Would appreciate your reply before we initiate the update.

That is an excellent question. Something I hadn't yet verified. After everything worked as expected, I updated my SuperDuper! clone backup and went back to getting work done.

I just now shut my 2010 Mac Pro down and let it sit for 20 seconds before powering back up. No issue. It came up to the High Sierra desktop as expected.

Same for me. After manual ShutDown/Restart, the AppleStore shows this update as 'Intalled' but also as 'Restart required' really weird.

In addition I noticed that the SHUTDOWN function from the Toolbar () is corrupted since I installed this update. If I need to SHUTDOWN, I have to use the Keyboard command.

I'am waiting a reaction from Apple assistance supervisor team

I had the same issue yesterday, now the second time, with my MacBook Pro 17'' late 2018. My MacBook did not boot again. It showed the Apple logo and fully filled progress bar and then a black screen and no further reaction.

After first failed installation two weeks ago, I contacted apple support and they told they are not aware of any issues with the update 2018-02 10.13.6 . Now again. I tried to reinstall High Sierra without success. I had to install from Time-Machine backup, which is still running.

Did anybody successfully installed this security update on a MacBook Pro like mine?

I'm experiencing massive trouble with this update as well. Tried Kurt's way (downloading through the link) but just experience the same problem. How important is this update? My issue is that my iMac will not restart or shut down after installation, so then I have to reinstall everything from TimeMachine. Is Apple aware of this flaw at all?

I am thinking that although this is not the last update my MacBook Pro will support there is little point in continuing with faulty updates. This one (security update 2018-2) took five attempts to boot up before it succeeded. It now appears to be running fine, but there are two good reasons for not doing further updates:

1. The next one may crash permenantly rendering my laptop dead and a lot of important data lost. Yes I do back up but this is just asking for trouble.
2. My iMac is now “frozen” on High Sierra with no support from next April (?). I want the two machines to be compatible - ie swap files properly and talk to each other without having to spend time “fixing it”.

So I think, unless someone knows better - I’m stepping updates here.

So does Apple have anything to say about this officially? Will they repair and reissue the High Sierra update or are we forced to go to Mojave now? I'd like to stay on High Sierra for a bit so hopefully they can correct this problem!

I haven't seen a smidgeon of anything official or unofficial on it... it must work for millions, but there's still many it fails for... we're just other users here trying to help those that Apple can't.

I'd stick with HS myself.

Ok, there is definitely something wrong with the update. Those who have not already updated should hold back for some time I guess.

Have same machine, same issue. Going to SF Apple tomorrow to see if quick fix. Luckily, backed up with time machine last night, so can restore. But, very inconvenient.