An error occurred while preparing the installation

Updating your Mac to the latest version of the macOS software program is normally simple and straightforward. However before, you might run right into Mac upday concerns. A widespread installation error message that most customers are receiving is below:

“An error arisen while preparing the installation. Try running this application again.”

You might view this message once you desire to install or reinstall an update or upgrade. This write-up describes exactly how you deserve to solve this trouble.

You watching: An error occurred while preparing the installation

See also: The macOS Installation Couldn’t Be Completed Error Fix


Here is how you can resolve this problem:

Please try the complying with troubleshooting tips in order. After trying each action, test to check out if you’ve solved your concern.

1. Rebegin your Mac.

Simply restart your Mac to check out if this fixes your difficulty.

2. Check the date and time.

Make sure that the date and also time on your Mac are set properly. Here is just how you can inspect this:

On your Mac, click System Preferrals, then select Date & Time. If your settings are not correct, update them. You may also want to inspect the “collection day and time automatically” box to rotate on the alternative to set day and time immediately.However, the alternative over might not work-related for you as you might not accessibility System Preferrals if your Mac stuck in the middle of a macOS upday. Then you can use Terminal (Applications / Utilities) to upday your date and time settings. Here is how:Turn off your Mac, you deserve to execute so by pushing and holding the power button.Turn on your Mac and instantly push and host the Command (⌘)-R secrets together. Keep holding these keys till you check out the Apple logo design or a spinning globe.Your Mac will certainly start up from macOS Recoincredibly. This may take time so be patient.Get in your password, if asked.You will see the “macOS Utilities” home window.From the top food selection, click Utilities and Terminal. This will certainly open up the Terminal home window.In Termina, enter the adhering to command and also hit enter:dateThis will offer you your computers time and also date setting. Is that correct? If not, update it:If your Mac has an Net connection, enter the complying with command also and hit enter:ntpdate -u will instantly upday the setting. If you have actually no Internet link, then you will certainly need to manually upday this setting:Go into the present date making use of this format: date mmddHHMMyy”. (mm = two-digit month, dd = two-digit day, HH = 24 hour, MM = minute, yy = 2 digit year) So if it is presently 11:46am, April 03, 2020, the command also would certainly look like: “date 0403114620”. So enter somepoint favor this:date 0403114620Aget let’s doubleinspect, enter the date command also aacquire to watch if your Mac has actually the correct establishing.Now leave Terminal and also try again.

3. Try installing in Safe Mode.

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Turn off your Mac.Turn on your Mac and also instantly push and organize the Shift essential.Keep holding the Shift vital till you see the Apple logo.Log in, you might need to log in a few times.Now your computer system is in Safe Mode.Try updating your Mac currently. Does it work?

4. Use macOS Recovery.

Turn off your Mac.Turn on your Mac and also instantly press one of the key-board combinations:Command also (⌘)-R: This reinstalls the latest macOS version that was set up on your Mac.Option-⌘-R: This will certainly update your Mac to the latest compatible macOS version.Shift-Option-⌘-R: This will certainly install the macOS version that came via your Mac.Click Reinstall macOS and then Continue.

5. Use a combo update.

Please note that you can usage this strategy to update your Mac from a prior version of macOS within the exact same significant release. For example, the macOS 10.15.4 combo update calls for that macOS 10.15.0 or later is mounted.They are dmg files. Also, note that they are exceptionally big records.Double click the install the file. And then follow the onscreen instructions.


John says

October 17, 2020 at 4:54 pm

Many many thanks Kurt. I have actually spent hrs trying to upgrade a MacPublication Pro at an early stage 2011 from Sierra to High Sierra through no success until I discovered your write-up.Tip 4 and also choosing ‘Option-Cmd-R’ for latest compatible macOS version did the trick.The entirety procedure did take a pair of hours though.

Noah says

December 31, 2020 at 8:56 am

hey john! when i tried this method, i was stuck at a display through simply the apple logo, without a loading bar or anypoint else. just how lengthy did it take you prior to somepoint happened?

Tom says

August 24, 2020 at 1:47 pm

My mac has that folder via a question note, so when I attempt to reinstall the OS via command and R, it’ll take me via to the 1 second left and also I’ll obtain that “error arisen while preparing the installation. Try running the application again.”. I cannot do anything else but try and also attempt aacquire and also it never before reinstalls the OS (High Sierra). I did check the date/time and also it was fine. I can’t get it began in safe mode, reason I have actually the folder through the question mark, and so on.

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Lina Blaseeni says

October 6, 2020 at 3:03 am

Did you take place to fix that problem if you did can you please present me exactly how I can’t seem to deal with mine I have actually the very same problem

Muhammad Asim Khan says

November 20, 2020 at 5:03 am


I was suffering the same trouble as you, Vai, Pritt, Jeff and Tom.

I resolved it by using

“Method 4Turn off your Mac.Turn on your Mac and also automatically press among the key-board combinations:– Option-⌘-R: This will upday your Mac to the latest compatible macOS variation.”