Disable installing Windows apps on non-system volumes

Supported on: At least Windows 8.1 Update 2

Registry

HKLM Software\Policies\Microsoft\Windows\Appx

Value name: RestrictAppToSystemVolume

Enabled: RestrictAppToSystemVolume = 1

Disabled: RestrictAppToSystemVolume = 0

Description

This policy setting allows you to manage installing Windows apps on additional volumes such as secondary partitions, USB drives, or SD cards. If you enable this setting, you can't move or install Windows apps on volumes that are not the system volume. If you disable or do not configure this setting, you can move or install Windows apps on other volumes.