MS15-056: Cumulative security update for Internet Explorer: June 9, 2015

Applies to: Internet Explorer 11Internet Explorer 10Internet Explorer 9


This security update resolves several reported vulnerabilities in Internet Explorer. The most severe of these vulnerabilities could allow remote code execution if a user views a specially crafted webpage in Internet Explorer. To learn more about the vulnerabilities, see Microsoft Security Bulletin MS15-056.

Additionally, this security update includes several non-security-related fixes for Internet Explorer. Check out the deployment information.

Non-security-related fixes that are included in this security update

General distribution release (GDR) fixes Individual updates may not be installed, depending on your version of Windows and the version of the affected application. You should view the individual articles to determine your update status.
KB numberTitle
3070132 WindowSetHeight and WindowSetWidth events are not fired in Internet Explorer 11
3070133 Update to improve Enterprise Mode and Enterprise Site Discovery feature for Internet Explorer 11
3066267 HTML table content renders slowly in Internet Explorer
3064921 Update to disable immersive Internet Explorer in Windows 8.1
3065008 Web applications may perform slowly and crash with "Stop responding" or "Recover Page" message in Internet Explorer
3070773 Update to add Group Policy settings to improve Enterprise Site Discovery feature in Internet Explorer 11
3071338 Internet Explorer 11 adds support for HTTP Strict Transport Security feature

How to obtain the update

Method 1: Microsoft Update

This update is available through Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Get security updates automatically.

Note For Windows RT and Windows RT 8.1, this update is available through Microsoft Update only.

Method 2: Microsoft Download Center

You can obtain the stand-alone update package through the Microsoft Download Center. Go to Microsoft Security Bulletin MS15-056 to find the download links for this update.

Known issues

After you install this security update, you may be unable to install some ActiveX controls.

To resolve this issue, install 3072449. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
3072449 Installation of ActiveX controls may fail in Internet Explorer in Windows 8.1 or Windows 8
(To work around this issue, run Internet Explorer as an administrator by using the Run as administrator option. To do this, right-click Internet Explorer, and then click Run as Administrator. This will enable the ActiveX controls to be installed. After ActiveX is installed, you no longer have to run Internet Explorer by using the Run as administrator option.)