Krauske wrote:
Thanks, I have tried going there but not really sure where to go once I get to that page. High Sierra 10.13.6 I have tried updating to mojave and the same thing happens.
On the page I linked earlier, scroll down to "Use the App Store" and click the link for "Catalina 10.15." You will get a pop up asking if you want to allow the link to open the App Store. Click "Open Link." This will open the App Store app and take you to the page where you can download Catalina. On that page, click the "Get" button.
The Catalina installer will download to your Mac. Note: after downloading it will start to run automatically. If you don't want to do the install right away, just exit (close) the installer. The installer app will remain in your Applications folder and you can run it at a later time.