In Windows 10, the new action center is where you'll find app notifications and quick actions. On the taskbar, look for the action center icon.
The old action center is still here; it's been renamed Security and Maintenance. And it's still where you go to change your security settings.
In the search box on the taskbar, enter security and maintenance and then select Security and Maintenance.
Article ID: 4028116 - Last Review: Aug 16, 2017 - Revision: 3