Microsoft Windows HTTP Services (WinHTTP) may not connect through the proxy server when you use proxy autoconfiguration in Microsoft Windows Server 2003 (919479)


The information in this article applies to:

  • Microsoft Windows Server 2003, Standard Edition
  • Microsoft Windows Server 2003, Enterprise Edition
  • Microsoft Windows Server 2003, Standard x64 Edition
  • Microsoft Windows Server 2003, Enterprise x64 Edition
  • Microsoft Windows Server 2003 Enterprise Edition for Itanium-based Systems
  • Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)
  • Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)
  • Microsoft Windows Server 2003 R2 Standard x64 Edition
  • Microsoft Windows Server 2003 R2 Enterprise x64 Edition

SYMPTOMS

When you use proxy autoconfiguration for Internet Explorer connectivity in Microsoft Windows Server 2003, Microsoft Windows HTTP Services (WinHTTP) may not connect through the proxy server.

CAUSE

This problem occurs because WinHTTP does not read the location of the proxy autoconfiguration .pac file from the registry. The automatic configuration script file writes this location to the registry.

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

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 Server 2003, 32-bit versions
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Winhttp.dll5.2.3790.2705363,52018-May-200604:18x86SP1SP1QFE
Winhttp.manNot Applicable1,17318-May-200604:19Not ApplicableSP1SP1QFE
Winhttp.manNot Applicable59718-May-200604:19Not ApplicableSP1SP1QFE
Windows Server 2003, x64-based versions
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Winhttp.dll5.2.3790.2705524,28818-May-200604:35x64SP1SP1QFE
Winhttp.manNot Applicable1,17518-May-200604:35Not ApplicableSP1SP1QFE
Winhttp.manNot Applicable60118-May-200604:35Not ApplicableSP1SP1QFE
Winhttp.dll5.2.3790.2705363,52018-May-200604:35x86SP1SP1QFE
Winhttp.manNot Applicable1,17318-May-200604:35Not ApplicableSP1SP1QFE
Winhttp.manNot Applicable59718-May-200604:35Not ApplicableSP1SP1QFE
Windows Server 2003, Itanium-based versions
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Winhttp.dll5.2.3790.27051,025,02418-May-200604:35IA-64SP1SP1QFE
Winhttp.manNot Applicable1,17418-May-200604:35Not ApplicableSP1SP1QFE
Winhttp.manNot Applicable59918-May-200604:35Not ApplicableSP1SP1QFE
Winhttp.dll5.2.3790.2705363,52018-May-200604:35x86SP1SP1QFE
Winhttp.manNot Applicable1,17318-May-200604:35Not ApplicableSP1SP1QFE
Winhttp.manNot Applicable59718-May-200604:35Not ApplicableSP1SP1QFE

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

The automatic configuration script file contains the string that WinHTTP needs. The string resembles the following string.
AutoConfigJSURL=http://www.contoso.com/proxy.pac
For more information about the fix for this issue in Microsoft Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:

919477 WinHTTP may not connect through a proxy server if proxy auto-configuration is used for Internet Explorer connectivity in Windows XP

For more information about the terms that are used in this article, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Modification Type:MinorLast Reviewed:7/26/2006
Keywords:kbWinServ2003preSP2fix kbfix kbbug kbQFE kbhotfixserver kbpubtypekc KB919479 kbAudITPRO
©2004 Microsoft Corporation. All rights reserved.