This policy setting allows you to manage a list of domains on which Internet Explorer will stop blocking outdated ActiveX ...

This policy setting allows you to manage a list of domains on which Internet Explorer will stop blocking outdated ActiveX controls. Outdated ActiveX controls are never blocked in the Intranet Zone.

If you enable this policy setting, you can enter a custom list of domains for which outdated ActiveX controls won't be blocked in Internet Explorer. Each domain entry must be formatted like one of the following:

1. "domain.name.TLD". For example, if you want to include *.contoso.com/*, use "contoso.com"
2. "hostname". For example, if you want to include http://example, use "example"
3. "file:///path/filename.htm". For example, use "file:///C:/Users/contoso/Desktop/index.htm"

If you disable or don't configure this policy setting, the list is deleted and Internet Explorer continues to block specific outdated ActiveX controls on all domains in the Internet Zone.

For more information, see "Outdated ActiveX Controls" in the Internet Explorer TechNet library.