Article ID: 829735
When you install Microsoft XML (MSXML) 4.0 Service Pack 2 (SP2) on a computer that is running Microsoft Windows 2000 Service Pack 1 (SP1) or on a computer that is running Windows 2000 Service Pack 2 (SP2), the Microsoft Windows HTTP Services (WinHTTP) proxy configuration tool (Proxycfg.exe) does not set the WinHTTP proxy settings, and you receive the following error message:
The dynamic link library WINHTTP5.dll could not be found in the specified path C:\WINNT\system32;.;C:\WINNT\system32;C:\WINNT\system;C:\WINNT;C:\WINNT\system32;C:\WINNT;
C:\WINNT\system32\WBEM;C:\Program Files\ActivCard\ActivCard Gold\resources;C:\Program Files\Microsoft SQL Server\80\Tools\BINN;C:\PROGRA~1\CA\Common\SCANEN~1;C:\PROGRA~1\CA\eTrust\
ANTIVI~1;C:\WINNT\System32;C:\Program Files\Cooktop 2.5.
WinHTTP.dll is part of Windows 2000 Service Pack 3 (SP3) and Windows 2000 Service Pack 4 (SP4). WinHTTP5.dll is part of MSXML4.0 SP2. The WinHTTP proxy configuration tool (Proxycfg.exe) is part of MSXML 4.0 SP2. However, it is not part of Windows 2000 SP3 or Windows 2000 SP4. When MSXML 4.0 SP2 is installed on a computer that is running Windows 2000 SP1 or Windows 2000 SP2, MSXML 4.0 SP2 installs Proxycfg.exe, but does not install the WinHTTP5.dll component because the WinHTTP.dll component already exists. Proxycfg.exe is installed by using MSXML 4.0 SP2 and is not compatible with the WinHTTP5.dll component. Therefore, when you run Proxycfg.exe, you receive the error message that is mentioned in the "Symptoms" section of this article.
For more information about a resolution for problems related to the Proxycfg.exe tool, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/830605/ )The Proxycfg.exe configuration tool is available for WinHTTP 5.1
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to" section.
Steps to Reproduce the Behavior
For more information about WinHTTP, visit the following Microsoft Developer Network (MSDN) Web site:
http://msdn2.microsoft.com/en-us/library/aa384276.aspxFor more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/823193/ )INFO: How To Get Windows HTTP 5.1 Certificate And Trace Tools