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V-253266

CAT II (Medium)

Alternate operating systems must not be permitted on the same system.

Rule ID

SV-253266r991589_rule

STIG

Microsoft Windows 11 Security Technical Implementation Guide

Version

V2R7

CCIs

CCI-000366

Discussion

Allowing other operating systems to run on a secure system may allow security to be circumvented.

Check Content

Verify the system does not include other operating system installations.

Run "Advanced System Settings".
Select the "Advanced" tab.
Click the "Settings" button in the "Startup and Recovery" section.

If the drop-down list box "Default operating system:" shows any operating system other than Windows 11, this is a finding.

Fix Text

Ensure Windows 11 is the only operating system on a device. Remove alternate operating systems.