I have been trying to get the newer macOS Sonoma upgrade on my computer. I have tried going to the App store and have no luck being able to update the OS. Certain web sites say I need a current OS.
iMac 21.5″, macOS 10.15
Is your iMac a 2019 or later model? That is a requirement for Sonoma. See: How to upgrade to macOS Sonoma - Apple Support
The model year of an iMac is available at Apple menu > About This Mac.
A late 2012 through late 2013 iMac can be upgraded to Catalina 10.15.7 but no later. See: How to download and install macOS - Apple Support
A mid 2014 and late 2014 iMac can be upgraded to the latest version of Big Sur macOS 11 but no later. See: How to download and install macOS - Apple Support
A late 2015 iMac can be upgraded to the latest version of Monterey macOS 12 but no later. See: How to download and install macOS - Apple Support
A 2017 iMac can be upgraded to the latest version of Ventura macOS 13 but no later. See: How to download and install macOS - Apple Support
A 2019 or later iMac can be upgraded to the current version of Sonoma macOS 14. See:How to upgrade to macOS Sonoma - Apple Support
I have macOs Catalina 10.15.7. How do I upgrade to macOS Sonoma
