Occasionally when a user goes to update macOS system software through the Software Update preference panel, they’ll find the updates that are shown are outdated, not showing up at all, or not showing all of the updates that you know to be available (for example, a newly released system software update).

If you find that the proper Mac software updates are not showing as available in the Software Update panel, you can refresh the Software Update preference panel in macOS.

Curiously enough, the refresh option is not shown in any of the menu items however, so if…