This security update resolves a vulnerability reported in Internet Messaging API. To learn more about this vulnerability, see CVE-2017-0008 in
Microsoft Security Bulletin MS17-006. If you are running Windows Vista or Windows Server 2008, install this security update (
3218362) in addition to security update 4012204, in order to be fully protective from this vulnerability.
Important
If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.