9.22. Background Apps
⌘ + r › ms-settings:privacy-backgroundapps
Leave background service enabled, but disable all apps. This will prevent the start menu search from breaking.
See Determining App List to generate a list of apps for more fine grained control of app access.
If start menu searches start to fail, it is because background apps service has been disabled. See Fix Windows Applications Not Appearing in Start Menu Searches.
9.22.1. Let apps run in the background
Enable Let apps run in the background
Computer Configuration › Administrative Templates › Windows Components › App Privacy › Let Windows apps run in the background
Default for all apps
User is in control
2 disables apps running in the background.
9.22.2. Choose which apps can run in the background
See Background Apps.