Truoble upgrating macOS Mojave 10.14.6 to 10.15.6

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Truoble upgrating macOS Mojave 10.14.6 to 10.15.6

I'm trying to upgrade my macbook pro from macOS Mojave 10.14.6 to 10.15.6 and the installation process fails every single time. The message that it's being prompted is "Unable to verify macOS". Any ideas? I've logged out and in from appstore, but the process is being interrupted at the same stage.

I've seen in some blogs that many users are facing the same issue but the solution they give (log ou/in) from appstore doesn't seem to be working for me. Some also say that the issue was with the installation package but I'm not sure about that.

thanks a lot in advance.

BR,

Angel

MacBook Pro 13”, macOS 10.14

Posted on Aug 31, 2020 3:00 AM

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Answer 1

Top-ranking reply

Ingo2711

Level 10

80,373 points

Aug 31, 2020 3:28 AM in response to aaibar74

Did you try to use the links, mentioned in step #4 in this article, after you opened it up in Safari?

How to upgrade to macOS Catalina - Apple Support

You could also use macOS Recovery, to upgrade automatically to the latest macOS version:

...

To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.

...

Option-⌘-R

Upgrade to the latest macOS that is compatible with your Mac.

...

copied from: How to reinstall macOS from macOS Recovery - Apple Support

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Answer 2

Aug 31, 2020 3:36 AM in response to aaibar74

Hi there.

Try this. It worked for me.

To open the Startup Security Utility, you must boot your Mac in Recovery Mode. To do this:

Turn on your Mac, and immediately press and hold Command (⌘)+R after you see the Apple logo.
Booting in Recovery Mode, the next thing you’ll see is the macOS Utilities window. Select Utilities > Startup Security Utility from the menu bar.
You’ll be asked to authenticate; click Enter macOS Password, then enter the name and password for an administrator account.

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Answer 3

aaibar74 Author

Level 1

8 points

Aug 31, 2020 3:36 AM in response to Ingo2711

Thanks a lot for your quick reply.

I did try the links/process mentioned in #step4 that's why I decided to start this thread.

I hope that the recovery option isn't the only option I have left...

but thanks anyway.

A.

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Truoble upgrating macOS Mojave 10.14.6 to 10.15.6

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