Microsoft KB Archive/835880

= You receive a &quot;400 – BadRequest&quot; error message from Internet Information Services 6.0 =

Article ID: 835880

Article Last Modified on 12/3/2007

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APPLIES TO


 * Microsoft Internet Information Services 6.0

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SYMPTOMS
When you send a request to a Microsoft Windows Server 2003-based computer that is running Microsoft Internet Information Services (IIS) 6.0, you may receive an error message that is similar to the following:

HTTP/1.1 GET / 400 – BadRequest



CAUSE
This issue occurs if the request headers are terminated with only the line feed (LF) delimiter or the 0x0A delimiter. By default, IIS 6.0 requires that request headers are terminated with the carriage return line feed (CRLF) delimiter or the 0x0D0A delimiter.



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
No prerequisites are required.

Restart requirement
You must restart your 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 tool in Control Panel. Date        Time   Version            Size    File name

01-Apr-2004 00:47  5.2.3790.146      335,872  Http.sys (x86) 01-Apr-2004 00:48  5.2.3790.146      851,968  Http.sys (IA-64)



MORE INFORMATION
The carriage return delimiter can be represented by CR or by 0xD. The line feed delimiter can be represented by LF or by 0xA. The carriage return line feed delimiter can be represented by CRLF or by 0x0D0A.

Keywords: kbbug kbfix kbqfe kbprb kbwinserv2003presp1fix kbhotfixserver KB835880

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