Use of Microsoft accounts to log on must be blocked.

From Windows 8/8.1 Security Technical Implementation Guide

Associated with IA controls: IAIA-1

Associated with: CCI-000366

SV-48457r2_rule Use of Microsoft accounts to log on must be blocked.

Vulnerability discussion

Control of logon credentials and the system must be maintained within the enterprise. Linking an account to an outside vendor could provide an opening if the account is compromised.

Check content

Analyze the system using the Security Configuration and Analysis snap-in. (See "Performing Analysis with the Security Configuration and Analysis Snap-in" in the STIG Overview document.) Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for "Accounts: Block Microsoft accounts" is not set to "Users can't add or log on with Microsoft accounts", this is a finding.

Fix text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Accounts: Block Microsoft accounts" to "Users can't add or log on with Microsoft accounts".

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.