This policy setting is used to turn on the certificate address mismatch security warning. When this setting is turned on, ...

This policy setting is used to turn on the certificate address mismatch security warning. When this setting is turned on, users are warned when visiting HTTPS websites that present certificates issued for a different website address.  This warning helps prevent spoofing attacks. 

If you enable this policy setting, certificate address mismatch warning will always be shown.

If you disable or do not configure this policy setting, the user will be able to choose whether the certificate address mismatch warning is given using the Advanced page in the Internet Control panel.