The update that this article describes has been replaced by a newer update.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:
After you install this security update, some drop-down lists and combo boxes do not appear in Internet Explorer 7.
If a webpage hosts another webpage that is in a different domain, and the hosted webpage has window restrictions enabled (default configuration) and contains a select control such as list or combo box when the hosting page tries to display the combo box or drop-down value from the hosted page, the combo box or list is not displayed.
For more information about this problem, click the following article number to view the article in the Microsoft Knowledge Base:
2628724 Some drop-down lists and combo boxes do not appear in Internet Explorer 7 after you install security update 2586448
To resolve this problem, install security update 2618444. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2618444 MS11-099: Cumulative Security Update for Internet Explorer: December 13, 2011
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.
Windows 7 gadgets may not work or be displayed correctly
Security update 2586448 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 2586448 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 2586448, click the following article number to view the article in the Microsoft Knowledge Base:
897225 How to install hotfixes that are included in cumulative security updates for Internet Explorer
Note In 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:
824994 Description of the contents of Windows XP Service Pack 2 and Windows Server 2003 software update packages
For a list of files that are provided within these packages, click the following link:
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:
Click Start, and then click Run, or click Start Search.
Type msinfo32.exe, and then press Enter.
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:
827218 How to determine whether a computer is running a 32-bit version or a 64-bit version of the Windows operating system
update security_patch security_update security bug flaw vulnerability malicious attacker exploit registry unauthenticated buffer overrun overflow specially-formed scope specially-crafted denial of service DoS TSE