Access to the Windows Store must be turned off.

From Windows 8 Security Technical Implementation Guide

Associated with IA controls: ECSC-1

SV-48300r1_rule Access to the Windows Store must be turned off.

Vulnerability discussion

Uncontrolled installation of applications can introduce various issues, including system instability and allow access to sensitive information. Installation of applications must be controlled by the enterprise. Turning off access to the Windows Store will limit access to publicly available applications.

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Fix text

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Internet Communication Management -> Internet Communication settings -> "Turn off access to the Store" to "Enabled".

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