When you install Windows Internet Explorer 9, additional prerequisite software and components are also installed. The prerequisites vary, depending on the operating system that you use.
Required software and components for Internet Explorer 9 installation
The installation of Internet Explorer 9 includes the installation of additional prerequisite software and components, depending on the operating system that you use. Internet Explorer 9 tries to automatically install prerequisite software and components. If the installation of prerequisite software and components fails, Internet Explorer 9 will not be installed. If this problem occurs, you must manually install the prerequisite software and components that are described in the following sections.
Note Internet Explorer 9 might not automatically install prerequisite software and components if the installation of other updates is in progress or if a system restart is pending. To determine whether installation of updates is in progress or a restart is pending, follow these steps:
- For Windows 7, click Start, click Control Panel, select Large icons or Small icons from the View by drop-down list, and then click Windows Update.
- For Windows Vista, click Security in Control Panel, and then click Windows Update.
If there is an update installation in progress, let the installation to complete before you try to install Internet Explorer 9. If updates have installed but the system has not yet restarted, restart your computer before you try to install Internet Explorer 9.
In some cases, you will receive the following error message if there is a restart pending:
The updates were not applicable.
If you are using a prerelease version of Windows, these updates will not install. Additionally, you will receive the following error message:
The updates were not applicable.
If you receive this error message, verify that your computer is running a released copy of Windows 7 or a released copy of Windows Vista SP2.
If you are not sure which version of Windows is installed, follow these steps:
Click here to view or hide step-by-step instructions about how to determine which version of Windows is installed
- Click Start, type msinfo32 in the Start Search or Search programs and files box, and then press Enter.
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- Locate your operating system next to OS Name and your system architecture type next to System Type.
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Click here to see more information for Windows 7 and Windows Server 2008 R2
Click here to see more information for Windows Vista Service Pack 2 and Windows Server 2008 Service Pack 2
Click here to see more information for Windows Vista Service Pack 1 and Windows Server 2008
Known Issues
You may receive an error message when you try to install Windows Internet Explorer 9. Installation problems can have different causes. For more information about how to resolve these problems, see
Article ID: 2399238 - Last Review: April 16, 2013 - Revision: 18.1
Applies to
- Windows Internet Explorer 9
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