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You receive a "Proxy authentication required" error message when you try to use Visual Studio 2005 online features
Article ID: 910804 - View products that this article applies to.
When you try to use Microsoft Visual Studio 2005 online features, you may receive an error message that is similar to the following:
Note This problem also occurs when you use any product that uses Microsoft Document Explorer 8.0.
The request failed with HTTP Status 407. Proxy authentication required.
Visual Studio 2005 has many features that are enhanced by Internet connectivity. However, some computers are behind proxy servers that require authentication. These computers must have additional files to bypass the proxy server to use Visual Studio 2005 online features.
To work around this issue, use one of the following methods.
Method 1: Modify the Visual Studio 2005 configuration fileIf the proxy server uses Windows authentication, the Visual Studio 2005 Help system cannot provide Windows credentials to the proxy server. You can modify the Visual Studio 2005 configuration file to work around this issue. When you do this, the Visual Studio 2005 Start Page is not affected, and this page downloads content correctly.
To make Visual Studio 2005 provide Windows credentials to the proxy server, either replace the code in the configuration file with the following code, or add the code starting with the <defaultProxy> tag and ending with the </defaultProxy> tag to the configuration file.
Method 2: Use the integrated Web browser in Visual Studio 2005In certain cases, the proxy server may use another authentication scheme, such as LDAP-based authentication on a UNIX box. However, there is no guaranteed way to make the Visual Studio 2005 Help system provide the needed credentials to the proxy server. The Visual Studio 2005 client must be designed to prompt the user for credentials when the proxy server requests credentials. However, this prompting mechanism does not exist in Visual Studio 2005.
You may be able to work around this issue by using the integrated Web browser in Visual Studio 2005. To do this, follow these steps:
For more information about the Visual Studio 2005 Help system and about proxy servers, visit the following Microsoft Developer Network (MSDN) Web site:http://msdn.microsoft.com/msdnmag/issues/05/08/AutomaticProxyDetection/default.aspx