Upgrade Macbook air OS X Yosemite I am trying to install Skype for business and Microsoft office on my MacBook Air 2015. but need to update to macOS 10.11 for this.
I don't have any installation updates pending, how can I upgrade?
Major releases need to be downloaded from the App Store. Just go there, it probably is shown on the main page (otherwise search for &quot;Big Sur&quot;).
It is recommended to make a backup of your system first before starting the upgrade. Apple has more details in https://support.apple.com/en-us/HT201475.