Windows Internet Explorer 7 may crash when you use it to visit a Web site. This problem occurs when the following registry subkey is enabled:

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Service pack information

To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

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Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

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Prerequisites

There are no prerequisites.

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Restart requirement

You do not have to restart the computer after you apply this hotfix.

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Hotfix replacement information

This hotfix does not replace any other hotfixes.

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File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Microsoft Windows XP

File name	File version	File size	Date	Time	Platform
Urlmon.dll	7.0.6000.20579	1,153,536	19-Apr-2007	17:37	x86

Microsoft Windows Server 2003, x86-based versions

File name	File version	File size	Date	Time	Platform
Urlmon.dll	7.0.6000.20579	1,153,536	19-Apr-2007	18:40	x86

Windows Server 2003, x64-based versions

File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Urlmon.dll	7.0.6000.20579	1,420,800	19-Apr-2007	04:45	x64	SP2	Not Applicable
Wurlmon.dll	7.0.6000.20579	1,153,536	19-Apr-2007	04:45	x86	SP2	WOW

Microsoft Windows Server 2003, Itanium-based versions

File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Urlmon.dll	7.0.6000.20579	2,529,280	19-Apr-2007	04:44	IA-64	SP2	Not Applicable
Wurlmon.dll	7.0.6000.20579	1,153,536	19-Apr-2007	04:44	x86	SP2	WOW

Windows Vista, 32-bit versions

File name	File version	File size	Date	Time	Platform
Urlmon.dll	7.0.6000.20578	1,153,536	13-Apr-2007	02:38	x86

Windows Vista, 64-bit versions

File name	File version	File size	Date	Time	Platform
Urlmon.dll	7.0.6000.20578	1,420,800	13-Apr-2007	03:40	x64

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Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

To work around this problem, disable the UseCoInstall registry entry. To do this, follow these steps:

1.	Click Start, click Run, type regedit, and then click OK.
2.	Locate the following registry subkey: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings\UseCoInstall
3.	Double-click the UseCoInstall entry to open the Edit DWORD Value box.
4.	In the Value data box, type 0, and then click OK.
5.	On the File menu, click Exit.

For more information about the UseCoInstall registry entry, click the following article number to view the article in the Microsoft Knowledge Base:

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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.

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For more information, click the following article number to view the article in the Microsoft Knowledge Base:

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