MS15-018: Cumulative security update for Internet Explorer: March 10, 2015

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

The update that this article describes has been replaced by a newer update. We recommend that you install the most current cumulative security update for Internet Explorer. To install the most current update, go to the following Microsoft website: For more technical information about the most current cumulative security update for Internet Explorer, go to the following Microsoft website:


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. This security update helps protect Internet Explorer from being attacked.

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

Update Information

How to obtain this update

Microsoft update

Use the Windows automatic updating feature to install the update from Microsoft Update. To do this, see Get security updates automatically on the Microsoft Safety and Security Center website.

Microsoft Download Center

To download the security updates, see the download links in Microsoft Security Bulletin MS15-018.

Known issues with this security update

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
3023174 MHTML files may be displayed incorrectly in Internet Explorer
3023851 A web application that uses the Web Worker blob method may not function in Internet Explorer 11
3040335 "Failed to Initialize connection subsystem" error when you establish VPN connections in Windows
3041186 Internet Explorer 11 may return incorrect JavaScript typeof result for host objects in non-edge document modes
3041187 Web-based applications crash if Internet Explorer 11 or Internet Explorer 10 is installed
3041188 Browsing is delayed on websites that use a proxy PAC file in Internet Explorer 11
3041189 Update to expand the functionality of out-of-date ActiveX control blocking in Internet Explorer when UAC is disabled
3041190 Internet Explorer 11 does not send the Trident/4.0 user-agent string to a webpage
3041192 You cannot use Enterprise Mode for Internet Explorer 11 if you use roaming profiles
3041194 Update for out-of-date ActiveX control blocking in Internet Explorer to consume compressed server-side content
3041195 Update improves the Site Discovery feature for Internet Explorer 11
3041196 Update to the "Run this time" functionality for out-of-date ActiveX control blocking in Internet Explorer
3041198 Double-byte space is not displayed as expected on a webpage in Internet Explorer 11 and Internet Explorer 10
3035310 Table content on a webpage is displayed slowly in Internet Explorer
3041200 Incorrect elements are selected when you use a coded UI test to test websites for Internet Explorer
3041201 Null result when you try to retrieve maxLength attributes from textarea elements on a webpage in Internet Explorer 11
3041202 Webpage editor of an https webpage is unusable after you paste content from an http webpage in Internet Explorer 11
3041203 Tabs and address bar are hidden and cannot be displayed in the full-screen view of Internet Explorer 11
3041204 All active windows are reloaded when you close a window before loading has finished in Microsoft Dynamics CRM
3038031 Siebel Open UI client in Internet Explorer 11 performs slowly in Windows 8.1 or Windows 7
3052192 Internet Explorer 10 or Internet Explorer 9 cannot open a download or Internet Options dialog box if LCIE is disabled