Turn off Push To Install service

Supported on: At least Windows Server 2016, Windows 10

Registry

HKLM Software\Policies\Microsoft\PushToInstall

Value name: DisablePushToInstall

Enabled: DisablePushToInstall = 1

Disabled: DisablePushToInstall = 0

If you enable this setting, users will not be able to push Apps to this device from the Microsoft Store running on other devices or the web.