Apple iOS/iPadOS 26 must disable the installation of alternative marketplace apps.

Forcing all applications to be installed from authorized application repositories can prevent unauthorized and malicious applications from being installed and executed on mobile devices. Allowing such installations and executions could cause a compromise of DOD data accessible by these unauthorized/malicious applications.

SFR ID: FMT_MOF_EXT.1.2 #47

This is a supervised-only control. If the iPhone or iPad being reviewed is not supervised by the MDM, this control is automatically a finding.

This check procedure is performed on both the device management tool and the iPhone and iPad.

Note: If an organization has multiple configuration profiles, the check procedure must be performed on the relevant configuration profiles applicable to the scope of the review.

In the iOS management tool, verify "Allow marketplace app installation" is unchecked.

On the iPhone and iPad device: 1. Open the Settings app. 2. Tap "General". 3. Tap "VPN & Device Management". 4. Tap the Configuration Profile from the iOS management tool containing the restrictions policy. 5. Tap "Restrictions". 6. Verify "Marketplace app installation not allowed" is listed.

If "Marketplace app installation" is not disabled in the management tool, this is a finding.

Install a configuration profile to disable the installation of alternative marketplace apps. This is a supervised-only control.

Configuration Profile Key: allowMarketplaceAppInstallation