Upgrading macOS 10.13.6 to macOS 11 for Google Ads Editor on a Macbook Pro

LeaLerdue wrote:

No luck. The installation will not start. When I have accepted where to install it and accepted terms - the installation does not start. I have tried several times.

What is the error message you receive when it fails?

Many times anti-virus software, cleaning/optimizer apps, and third party security software interfere with normal operation of macOS. You can try booting into Safe Mode to see if it makes any difference to running the Catalina installer.

Another option would be to create a bootable macOS 10.15 Catalina USB installer & boot from the USB Catalina installer. If you have those apps installed which I mentioned previously, then you may encounter issues during phase 2 even when using the USB installer.

Create a bootable installer for macOS - Apple Support

For reference: How to download and install macOS - Apple Support

This page provides App Store links for High Sierra, Mojave, Catalina, Big Sur, Monterey, and Ventura.

What happens when you open Software Update? A 2017 MBP can run up to macOS Ventura 13.7.6.

When you select "About This Mac" from the Apple menu does it indicate you have a 2017 MacBook Pro?

Try downloading Catalina from the App Store first.

macappstores://apps.apple.com/app/macos-catalina/id1466841314?mt=12

Is this a work computer or purchased used? I'm at a loss. Perhaps someone else will have an idea.