10.13.2 supplemental update hangs on Installation is in Progress

Now at 9 hours at 75% progress. How much patience? Noticed that the MacBook Air fan is on that medium level and has been since this morning. I assume that this installation process is full proof or is that fool proof!?

Mine did not work out. Progress bar got all the way complete, then hung. Tried re-installing OS via CMD-R boot, same thing happened, and this time was overnight (7+hours). This is a Mac Mini I bought two weeks ago. Will try re-installing previous version tonight

It worked for me after people made some suggestions. So, here is what I did: I pushed the power button, then I held down the command-r and after a while the recovery panel appeared. But then I thought what if the supplemental update actually installed (and it was just stuck from restarting)? So instead of selecting to re-install the macOS High Sierra I went to the Restart under the Apple menu. And guess what? The progress bar reappeared and the process completed! I checked that the Supplemental Update had installed ... and it did!

FYI I started this same update just over an hour ago on a late 2015 iMac. about 15 minutes into the update, i too was thinking that the update had "hung". I also considered powering down and restarting, but the question (What happens when you interrupt an OS update?) really concerned me. I didn't really want to think about having to reinstall OS X and possibly restore from time machine backup. While searching for potential solutions in the support communities on an older iMac, I glanced over at the updating iMac to see there had been some progress in the installation. This was very reassuring, I left it alone. It rebooted a couple of times during the update, and I had to enter my login password once. Total update time in my case was a little over an hour.

Tried it again last night tried. Restart from CMD-X screen, reinstall OS, basically everything people have suggested. It hangs when the scroll bar is complete. That was at 9:30pm, at 7:30AM, it was at the same point.

It's going back to the store tonight. its Apple's problem to fix now.

2017 IMAC 27Inch 4.5 1.7 same issue... just hangs at 75 percent, did not want to burn in my screen with that logo of the apple, and calculating time message......

This stinks, I just got this machine... called apple care the first time, they had me reinstall the operating system. but the update still hangs again.....Guess I can't update my apple anymore... this may be my last iMac....

I'm on my 2016 MacBook Pro 15" and it hangs at the beginning of the install. Hardly any progress bar. I've tried three times...called support on the first try after it hung for almost 2 hours. They told me to restart the computer and reset the PRAM. Did that and same thing happened. I will wait for the next release to update, I suppose.

Glad it worked for you guys!

I was installing this update on a Mid 2013 MBA and let it sit overnight. Came in to work in the morning and the bar was filled all the way but it never finished. After restarting the computer would not finish booting. Tried Safe Mode, Startup Manager, and even Disk Utility to check the hard drive. Ended up reinstalling 10.13.2 altogether.

That worked but the supplemental update was still in the App Store. Round two of installing right now. Hopefully this time it takes.

I’m having some of the same issues. Update goes all the way to the end of the progress bar and hangs up. I’ve tried everything, including installing from a bootable disk. Looks like everything is fine, but gets to end of the progress bar and hangs.

I’ve allowed it to go overnight twice and no luck. The last Apple support person I talked to told me I was out of luck and to go find someone that can recover my data from the hard drive. Thanks a lot apple.

I might try to load El Capitan and see if that works.

Ive had the same problem. Upgraded to Sierra... my screen started acting weird. I would boot up into a black screen for 15 min. Then went to High Sierra ... the update bricked my Macbook Pro Retina!

Nothing would work. I couldn't boot off recovery,the laptop was dead. I tried every trick in the book. Smc,Pram...etc .

Finally I made a recovery drive on an external drive with Tech Tool Pro.Was able to then boot into the Tech Tool Protogo and run tests. The drive was fine, hardware and ram good. So i wiped the drive and reformatted . Then I made a boot drive off of El Capitan and reinstalled El Capitan. It took me a week to figure this out. I even went to the Apple store and they said my logic board was fried and wanted $700!

Common Apple! this is crazy. Your software broke my Laptop. I am a Composer for Tv and Film ... I rely on these tools to make a living.

I got the Macbook Pro up and running, but I still have this weird anomaly, where it boots into a black screen for 10-15 minutes, then turns on. This is very discouraging. I've been using apple products to score Film and Tv projects for years. It may be time to make the switch to PC based Daws and there powerful computers.

With all seriousness: when is apple going to fix this incredibly annoying problem? Have they even acknowledged that this is so fundamentally and ridiculously broken yet? I'm sitting here waiting for another (who knows how long this time) for a 40MB update to be applied. Why is this a problem? It's literally been like this with every single update I've run so far. This was a clean install of High Sierra.

At this point, I'm just going to downgrade back to El Capitan, because this experience with Sierra, and now High Sierra has been TERRIBLE.

I just tried this update on my 2013 iMac before reading this thread. The update went about 75% like others say, I waited about an hour (because why would I wait longer? Regular software updates do not take this long) and I reluctantly restarted my machine. It booted up fine and when I checked the App Store it said the update was not installed. Safe to say, I’ll get the next update. It’s not worth losing all my work or my machine over or the time it would take to restore from time machine. I’m just surprised this thread goes back a month and a half with still no word from Apple? I can only imagine this is happening to employees as well.

Stop it if you can. Adobe did an auto upgrade on my 2011 27” iMac, went into reboot loop, anything older than 2-3 years and it totally screws up your machine. Stop it if you can, seriously it’s not compatible

Same issue on a 2013 iMac. I rebooted once and quickly got back to “Installation is in progress. Calculating time remaining...”. Computer is totally quiet - can’t hear any fans or disk drive whir.