Microsoft KB Archive/931299

= Internet Explorer 6 may close unexpectedly when you try to use digest proxy authentication to connect to HTTPS Web sites =

Article ID: 931299

Article Last Modified on 11/15/2007

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APPLIES TO

 Microsoft Internet Explorer 6.0 Service Pack 1, when used with:  Microsoft Windows XP Service Pack 1

 Microsoft Windows 2000 Professional Edition  Microsoft Internet Explorer 6.0, when used with:  Microsoft Windows Server 2003 Service Pack 1

 Microsoft Windows XP Service Pack 2</li></ul>

 Microsoft Windows XP Service Pack 2</li></ul> </li></ul>

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<div class="symptoms_section">

SYMPTOMS
When you try to use digest proxy authentication to connect to Hypertext Transfer Protocol Secure (HTTPS) Web sites, Microsoft Internet Explorer 6 may close unexpectedly. This problem occurs when Internet Explorer connects to HTTPS Web sites by using the Microsoft Windows Internet (WinINet) application programming interface (API) together with digest proxy authentication.

<div class="cause_section">

CAUSE
This problem occurs because the Wininet.dll file incorrectly handles HTTP 407 error codes that occur during digest proxy authentication.

<div class="resolution_section">

RESOLUTION
This problem is fixed in Windows Internet Explorer 7. To obtain Internet Explorer 7, visit the following Microsoft Web site:

http://www.microsoft.com/windows/ie/downloads/default.mspx

Hotfix information
A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
To apply this hotfix, you must be running Microsoft Windows XP with Service Pack 1 (SP1), Microsoft Windows XP with Service Pack 2 (SP2), or Microsoft Windows 2000 with Service Pack 4 (SP4).

Restart requirement
You must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

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.

Windows 2000 SP4 or Windows XP SP1 x86 version
<div class="workaround_section">

WORKAROUND
To work around this problem, do not use the HTTPS protocol. You can use a different proxy authentication method. Different proxy authentication methods include NTLM and Kerberos.

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STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Keywords: kbie600fix kbwinxpsp3fix kbwinserv2003presp1fix kbie600sp2fix kbhotfixserver kbqfe kbie600presp2fix kbfix kbbug kbpubtypekc KB931299

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