.NET Framework-reliant components not signed with Authenticode must be disallowed to run (Restricted Site Zone).

From Internet Explorer 9 Security Technical Implementation Guide

Part of DTBI650 - .NET w/Authenticode unsigned-Restricted

Associated with IA controls: ECSC-1

SV-40677r1_rule .NET Framework-reliant components not signed with Authenticode must be disallowed to run (Restricted Site Zone).

Vulnerability discussion

This policy setting allows you to manage whether .NET Framework components that are not signed with Authenticode can be executed from Internet Explorer. These components include managed controls referenced from an object tag and managed executables referenced from a link. If you enable this policy setting, Internet Explorer will execute unsigned managed components. If you select Prompt in the drop-down box, Internet Explorer will prompt the user to determine whether to execute unsigned managed components. If you disable this policy setting, Internet Explorer will not execute unsigned managed components. If you do not configure this policy setting, Internet Explorer will execute unsigned managed components.

Check content

Fix text

Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> "Run .NET Framework-reliant components not signed with Authenticode" to “Enabled” and select "Disable" from the drop-down box.

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.