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Applications that use the WinINet API may not respond to a server as expected when you use Internet Explorer 6
Article ID: 890215 - View products that this article applies to.
Important This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/256986/ )Description of the Microsoft Windows Registry
In Microsoft Internet Explorer 6, when an application uses the Windows Internet (WinINet) API to query the status of a response from a server, the application may not respond to the server as expected.
This problem may occur if the first response that the server sends is "100 Continue." A server sends a "100 Continue" response to indicate that the rest of the request can be sent. The "100 Continue" response is not the server's final response.
However, WinINet sends to the application the first response that it receives from the server. If the server sends a "100 Continue" response, WinINet treats that response as the server's final response and sends the response to the application. The application does not receive the server's next response and therefore cannot respond to the server as expected.
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:
http://support.microsoft.com/contactus/?ws=supportNote 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.
Registry informationAfter you apply this hotfix, you must change the registry to add the required subkey, entry, and value. To do this, follow these steps.Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
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 tool in Control Panel.
Internet Explorer 6 for Microsoft Windows NT 4.0 with Service Pack 6a, Windows 98, and Windows Millennium Edition
Date Time Version Size File name -------------------------------------------------------------- 03-Mar-2003 17:24 6.0.2800.1172 33,792 Ieuninst.exe 01-Oct-2004 07:36 6.0.2800.1473 30,208 Ieupdate.exe 03-Dec-2004 01:56 6.0.2800.1482 581,120 Wininet.dll
Internet Explorer 6 for Microsoft Windows 2000 and Windows XP
Date Time Version Size File name -------------------------------------------------------------- 21-Sep-2004 03:21 6.0.2800.1473 38,912 Iecustom.dll 03-Dec-2004 01:56 6.0.2800.1482 581,120 Wininet.dll 21-Sep-2004 03:21 6.0.2800.1473 38,912 Iecustom.dll
Microsoft has confirmed that this is a problem in Microsoft Internet Explorer 6.