Applies ToInternet Explorer 9 Windows Server 2008 R2 Datacenter Windows Server 2008 R2 Enterprise Windows Server 2008 R2 Standard Windows Server 2008 R2 Web Edition Windows 7 Enterprise Windows 7 Professional Windows 7 Ultimate Windows 7 Home Premium Windows 7 Home Basic Windows Server 2008 for Itanium-Based Systems Windows Server 2008 Datacenter Windows Server 2008 Enterprise Windows Server 2008 Standard Windows Server 2008 Web Edition Windows Vista Business Windows Vista Enterprise Windows Vista Home Basic Windows Vista Home Premium Windows Vista Ultimate Windows Vista Enterprise 64-bit Edition Windows Vista Home Basic 64-bit Edition Windows Vista Home Premium 64-bit Edition Windows Vista Ultimate 64-bit Edition Windows Vista Business 64-bit Edition Windows Server 2008 R2 Datacenter Windows Server 2008 R2 Enterprise Windows Server 2008 R2 Standard Windows Server 2008 R2 Web Edition Windows 7 Enterprise Windows 7 Professional Windows 7 Ultimate Windows 7 Home Premium Windows 7 Home Basic Windows Server 2008 for Itanium-Based Systems Windows Server 2008 Datacenter Windows Server 2008 Enterprise Windows Server 2008 Standard Windows Server 2008 Web Edition Windows Vista Business Windows Vista Enterprise Windows Vista Home Basic Windows Vista Home Premium Windows Vista Ultimate Windows Vista Enterprise 64-bit Edition Windows Vista Home Basic 64-bit Edition Windows Vista Home Premium 64-bit Edition Windows Vista Ultimate 64-bit Edition Windows Vista Business 64-bit Edition Microsoft Windows XP Professional Microsoft Windows XP Home Edition Microsoft Windows XP Professional x64 Edition Windows Server 2008 for Itanium-Based Systems Windows Server 2008 Datacenter Windows Server 2008 Enterprise Windows Server 2008 Standard Windows Server 2008 Web Edition Windows Vista Business Windows Vista Enterprise Windows Vista Home Basic Windows Vista Home Premium Windows Vista Ultimate Windows Vista Enterprise 64-bit Edition Windows Vista Home Basic 64-bit Edition Windows Vista Home Premium 64-bit Edition Windows Vista Ultimate 64-bit Edition Windows Vista Business 64-bit Edition Microsoft Windows XP Professional Microsoft Windows XP Home Edition Microsoft Windows XP Professional x64 Edition Microsoft Windows XP Professional Microsoft Windows XP Home Edition Microsoft Windows XP Professional x64 Edition

The update that this article describes has been replaced by a newer update. To resolve this problem, install the most current cumulative security update for Internet Explorer. To install the most current update, visit the following Microsoft website:

http://www.microsoft.com/technet/security/current.aspx http://windowsupdate.microsoft.comFor more technical information about the most current cumulative security update for Internet Explorer, visit the following Microsoft website:

http://www.microsoft.com/technet/security/current.aspx

INTRODUCTION

Microsoft has released security bulletin MS11-050. To view the complete security bulletin, visit one of the following Microsoft websites:

How to obtain help and support for this security update

Help installing updates: Support for Microsoft UpdateSecurity solutions for IT professionals: TechNet Security Troubleshooting and SupportHelp protect your computer that is running Windows from viruses and malware:Virus Solution and Security CenterLocal support according to your country: International Support

More 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 the version of Windows and the version of the affected application. Please view the individual articles to determine your update status.

Article number

Article title

2534409

A webpage stops responding after you close a modal dialog box that is started by a VB6 ActiveX control in Internet Explorer 9

2539352

Memory leak when the window.createPopup method and the document.createStyleSheet method are used in Internet Explorer 7 or in Internet Explorer 8

2555207

Tasks may not be displayed in the Jump List of a pinned Internet Explorer 9 icon in Windows 7 or in Windows Server 2008 R2

2556260

You cannot edit a cell in a DHMTL grid after you delete the cell's contents in Windows Internet Explorer 8 on a computer that is running Windows Vista or Windows Server 2008

2566263

A warning message unexpectedly appears when you try to download a file in Internet Explorer 9: "This type of file could harm your computer"

2566258

The download process stops at 99 percent when you try to download a file in Internet Explorer 9

2566149

You cannot resize the address bar in a Hebrew version of Internet Explorer 9

2565653

Internet Explorer 9 crashes on a computer that has iMesh or an NVidia graphics driver installed

2565609

Internet Explorer 9 hardware acceleration may not work in some virtualization environments

2565080

The origin property change event does not occur in Internet Explorer 9 when the background-origin is changed through the background shorthand property

2565076

The background shorthand property does not return an empty string when you view a webpage in Internet Explorer 9

2564594

The gradient of an SVG graphic stretches non-uniformly when you view the webpage in Internet Explorer 9

2555751

The Function constructor produces an error in Internet Explorer 9 Standards mode

2555542

How to enable Internet Explorer 9 to use top-level domains to perform Pinned Site domain checks on SiteMode APIs and on Task definitions

2554852

The font size of an input field or of a text box is smaller than expected in Internet Explorer 8 or in Internet Explorer 9

2554771

Some table cells may not be displayed in Internet Explorer 8 and in Internet Explorer 9 when the table contains several columns that contain different colspan attributes

2526430

Internet Explorer 8 does not respect the Security Features Group Policy settings

Hotfixes

Security update 2530548 packages for Windows XP and for Windows Server 2003 include Internet Explorer hotfix files and general distribution release (GDR) files. If no existing Internet Explorer files are from the hotfix environment, security update 2530548 installs the GDR files. Hotfixes are intended to correct only the problems that are described in the Microsoft Knowledge Base articles that are associated with the hotfixes. Apply hotfixes only to systems that are experiencing these specific problems. These hotfixes may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains these hotfixes. For more information about how to install the hotfixes that are included in security update 2530548, click the following article number to view the article in the Microsoft Knowledge Base:

897225How to install hotfixes that are included in cumulative security updates for Internet Explorer NoteIn addition to installing hotfix files, review the Microsoft Knowledge Base article that is associated with the specific hotfix that you have to install to determine the registry modification that is required to enable that specific hotfix. For more information about how to determine whether your existing Internet Explorer files are from the hotfix or from the GDR environment, click the following article number to view the article in the Microsoft Knowledge Base:

824994Description of the contents of Windows XP Service Pack 2 and Windows Server 2003 software update packages

FILE INFORMATION

For a list of files that are provided within these packages, click the following link:

File attributes tables for security update 2530548.csv

How to determine whether you are running a 32-bit or a 64-bit edition of Windows

If you are not sure which version of Windows that you are running or whether it is a 32-bit version or 64-bit version, open System Information (Msinfo32.exe), and review the value that is listed for System Type. To do this, follow these steps:

  1. Click Start, and then click Run, or click Start Search.

  2. Type msinfo32.exe and then press ENTER.

  3. In System Information, review the value for System Type.

    • For 32-bit editions of Windows, the System Type value is x86-based PC.

    • For 64-bit editions of Windows, the System Type value is x64-based PC.

For more information about how to determine whether you are running a 32-bit or 64-bit edition of Windows, click the following article number to view the article in the Microsoft Knowledge Base:

827218How to determine whether a computer is running a 32-bit version or a 64-bit version of the Windows operating system

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