Microsoft KB Archive/187034

= Netscape Navigator Errors: "HTTP Error 400"; "400 Bad Request" =

Article ID: 187034

Article Last Modified on 6/22/2005

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APPLIES TO


 * Microsoft Internet Information Server 4.0

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This article was previously published under Q187034



We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/prodtech/IIS.mspx



SYMPTOMS
When browsing an Internet Information Server (IIS) Web site from Netscape Navigator version 4.05, the following error message may occur:

HTTP Error 400

400 Bad Request

Due to malformed syntax, the request could not be understood by the

server. The client should not repeat the request without

modifications.



CAUSE
The Uniform Resource Locator (URL) that Navigator is attempting to open contains a space.



WORKAROUND
To work around this problem, do one of the following:

 On the server, rename the file that contains a space to another name that does not contain a space.

-or- In the Navigator Location text box, substitute "%20" (without the quotation marks) for the space in the URL. The string "%20" is the URL encoding equivalent of a space character.

For example, if the URL is

http://example.microsoft.com/has space.htm

instead use:

http://example.microsoft.com/has%20space.htm





MORE INFORMATION
When you view directories in "directory browse" format (no default.htm in the directory), the link at the top of the page called "[To Parent Directory]" is not URL-encoded with a %20 in place of any space-character in the filename.

When you use Netscape Navigator version 4.05 and click the link, the Web server stops responding and the error message occurs.

The third-party products discussed here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

(c) Microsoft Corporation 2000, All Rights Reserved. Contributions by Kevin Zollman, Microsoft Corporation.

Additional query words: browser netscape navigator "HTTP ERROR 400" %20 akz

Keywords: kbprb kbpending KB187034

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