Enable App Installer Default Source
Supported on: At least Windows Server 2016, Windows 10 Version 1809
Registry
HKLM
Software\Policies\Microsoft\Windows\AppInstaller Value name: EnableDefaultSource
Enabled: EnableDefaultSource = 1
Disabled: EnableDefaultSource = 0
Description
This policy controls the default source included with the Windows Package Manager. If you do not configure this setting, the default source for the Windows Package Manager will be available and can be removed. If you enable this setting, the default source for the Windows Package Manager will be available and cannot be removed. If you disable this setting the default source for the Windows Package Manager will not be available.