Article ID: 943112 - View products that this article applies to.
Consider the following scenario. You develop an application that hosts the WebBrowser control. Then, you move to a link in the WebBrowser control. In this scenario, you expect the BeforeNavigate2 event to be triggered before the target page is loaded. However, when you run this application on a Windows Vista-based computer, the BeforeNavigate2 event is not triggered when you move to a non-standard link.
Note A non-standard link refers to a link that has special characters and whose URL does not start with http, with https, with ftp, or with other known protocols.
For example, the HREF tag of the link in question is one of the following:
Note This issue does not occur in Windows XP or in Windows Server 2003.
Service pack informationTo 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:
(http://support.microsoft.com/kb/935791/ )How to obtain the latest Windows Vista service pack
Hotfix informationA 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:
PrerequisitesNo prerequisites are required.
Restart requirementYou must restart the computer after you apply this hotfix.
Hotfix replacement informationThis hotfix does not replace any other previously released hotfixes.
Registry informationTo use this hotfix, you do not have to make any changes to the registry.
File informationThe 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.
Windows Vista, x86-based versions
Collapse this tableExpand this table
To work around this problem, append the "http://" prefix to the beginning of the URL of the non-standard link in the HREF tag.
For example, change the <a href="<ABCD>"> tag to the following:
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.
For more information about the BeforeNavigate2 event, visit the following Microsoft Web site:
http://msdn2.microsoft.com/en-us/library/aa768326.aspxFor more information about the WebBrowser control, visit the following Microsoft Web site:
http://msdn2.microsoft.com/en-us/library/aa752040.aspxFor more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
Article ID: 943112 - Last Review: October 8, 2011 - Revision: 3.0
Contact us for more help
Connect with Answer Desk for expert help.