Microsoft KB Archive/886461

= FIX: You cannot download large files from an ASP.NET application on a computer that is running IIS 6.0 =

Article ID: 886461

Article Last Modified on 7/24/2007

-

APPLIES TO


 * Microsoft Windows Server 2003, Web Edition
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)

-





SYMPTOMS
After you configure a Microsoft ASP.NET application on a computer that is running Microsoft Internet Information Services (IIS) 6.0, you experience the following symptoms:  If you try to transfer a large amount of data to the IIS 6.0 server, the transfer is not successful. When this behavior occurs, you receive the following error message:

The underlying connection was closed: An unexpected error occurred on a receive.

 If you view the %WINDIR%\System32\logfiles\Httperr .log file, you notice a Timer_EntityBody entry that corresponds to the unsuccessful download operation.

Note In this log file name,  represents the sequence number of the log file.



CAUSE
This problem occurs because the Http.sys kernel mode driver prematurely resets the connection to the Web server. Therefore, the file transfer operation is interrupted.



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 to install this hotfix.

Restart requirement
You do not have to 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 20-Oct-2004 18:36  5.2.3790.224      335,872  Http.sys



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
Microsoft Windows Server 2003 Service Pack 1 (SP1) addresses all known timer-related issues including some issues that were found after the problem that is mentioned in this article.

For more information, 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

For more information about additional logging properties that are available in the Httperr#.log file, click the following article number to view the article in the Microsoft Knowledge Base:

832975 Additional properties are now available for logging in the Httperr#.log file in IIS 6.0

Additional query words: Web, Internet, quits, stops, big, Active, app, program, link, get

Keywords: kbbug kbfix kbwinserv2003presp1fix kbhotfixserver kbqfe KB886461

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.