You install MS14-080: Cumulative security update for Internet Explorer: December 9, 2014 on a computer that's running Internet Explorer 11 or the Internet Explorer 11 Web Browser control. However, after you do this, you may experience unexpected behavior when you interact with sites that use one or more web application modal dialog boxes. Any data or information that's provided in the modal dialog box may not be returned to the application window or to the dialog box that created the data or information. Therefore, the application that created the dialog box may exhibit errors or lack specific functionality that was dependent on that dialog box data.
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
To apply this update, you do not have to make any changes to the registry.
You do not have to restart the computer after you apply this update.However, you must restart Internet Explorer for the changes to take effect.
Update replacement information
This update does not replace a previously released update.
The global version of this update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows 7 and Windows Server 2008 R2
For all supported x86 version of Internet Explorer 11
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
When this problem occurs, the webpage calls the showModalDialog() function and the varArgIn parameter from a modal window. However, the showModal.dialogArguments object in the created modal window is NULL. Additionally, the return value of the showModalDialog() function is NULL or undefined when it should have a valid value.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates