You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

mudshark73 Author

Level 1

9 points

Can't upgrade from High Sierra to Mojave or Catalina.

I've never had this issue before. I literally cannot upgrade to Mojave or Catalina. Neither show up in a search of the App Store. A google search turned up a site with a link to Mojave in the App Store. When I click to install it, I get the message "This copy of the install macOS Mojave application is damaged, and can't be used to install macOS."

With more research, I decided I would be better off with Catalina anyways. I can't find that in the app store at all. I did find an apple support downloads page with a bunch of security updates and combo updates for Catalina, but I'm not sure which is the one I need for a fresh install.

I'm on a 2018 MacBook Pro. What am I missing here? I can't go up to Big Sur just yet.

MacBook Pro 15″, macOS 10.13

Posted on Jan 24, 2021 7:48 PM

Top-ranking reply

Niel

Level 10

732,401 points

Posted on Jan 24, 2021 7:54 PM

Back up your data, check your applications for compatibility, and download Catalina through the link provided.

(190948)

View in context

Can't upgrade from High Sierra to Mojave or Catalina.

Similar questions