macOS High Sierra 10.13.6 full installer

Check here under #4.

Mike you are trying to download High Sierra to your MacBook Pro, did this MacBook Pro come preinstalled with Mojave or Catalina. The reason I ask is that any mac that came preinstalled with a newer OS than High Sierra will not be allowed to download High Sierra or any older OS. Apple does not take into consideration that you want to download the installer and then install it on another older compatible mac.

If that is not the case then I probably do the same a you.

I am doing this on a mac with macOS Mojave 10.14.6 installed.

(My mac is/ was capable of running High Sierra)

Open Safari and click on this link,

How to upgrade to macOS High Sierra - Apple Support

Go to Section 4 and click on Get macOS High Sierra

this will redirect you to the App Store High Sierra page

It should say 'Get' or 'Download'

When I click on Download the Software Updates window opens

and after a couple of minutes I see this,

Then I click on Download and see this,

"Downloading new updates..." is a bit misleading it is in fact downloading Install macOS High Sierra.app

to the Applications folder.

From your earlier screenshot of the Software Update panel you have checked the box Automatically keep my mac up to date.

I am not entirely sure it will make a difference but uncheck that box.

Restart your mac and try downloading High Sierra again.

mike! wrote:

Unfortunately, is not the same for me. I've Catalina on my MacBook Pro that I use for dowloading

You need to open this page in Safari. The download link will not work from Firefox.

How to upgrade to macOS High Sierra - Apple Support

I believe you need to be on a version of OS that is equal to or less than the OS you're trying to download which is why it worked for me and not you.

If you have another Mac that has High Sierra or less, you could try that one. Or you could reboot your iMac into Internet Recovery using Shift+Option+Command+R and install the OS that was shipped with your iMac to an external USB drive. Then boot to the external and download High Sierra.

When you go to the App Store High Sierra download page, it should say Get or Download.

If the App Store says ‘Open’ then it is detecting a previous download of the install app

go to the Applications folder locate Install macOS High Sierra.app.

Move it to the Trash, empty the Trash.

Restart, click on the link again, the App Store should say ‘Get' or 'Download'.

keg55 wrote:

I believe, as I mentioned previously, you're trying to downgrade your current OS instead of upgrading it.

Actually the user is trying to download the High Sierra installer which should work.

And FWIW…

"I believe you need to be on a version of OS that is equal to or less than the OS you're trying to download which is why it worked for me and not you."

Is incorrect. I can download it from Catalina.

Yes, I'm downloading it now. My current OS is High Sierra.

After it finished downloading

And the installer is still in my /Applications folder.

I believe, as I mentioned previously, you're trying to downgrade your current OS instead of upgrading it.

Are you logged in with your apple id on this Mac?

Hi,

Go for any really, and buy a power slitter to avoid mac moaning that you don't have a temperature sensor. You don't need one with SSD as they do not get hot. Watch some videos on yt.