To install apps that are not in Microsoft Store, Windows 11 must be switched out of S mode. This is permanent and cannot be reversed.
Follow these steps on Windows 11 in S mode:
- Open Settings > System > Activation.
- Under Switch to Windows 11 Pro (or similar), select the Go to the Store link.
- Do not select the link under Upgrade your edition of Windows; that keeps the device in S mode.
- In Microsoft Store, on the Switch out of S mode (or similar) page, select Get.
- Confirm the action. After the confirmation message appears, apps from outside Microsoft Store can be installed.
Alternatively, the switch page can be opened directly from this link if needed: Switch out of S Mode.
Note: Switching out of S mode is one-way. After switching, S mode cannot be turned back on.
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