Microsoft KB Archive/298618

= You cannot download files that are 2 GB or larger =

Article ID: 298618

Article Last Modified on 11/27/2007

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APPLIES TO


 * Microsoft Internet Explorer 6.0
 * Microsoft Internet Explorer 6.0
 * Microsoft Internet Explorer 6.0
 * Microsoft Internet Explorer 6.0
 * Microsoft Internet Explorer 6.0
 * Windows Internet Explorer 7

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This article was previously published under Q298618



SYMPTOMS
When you attempt to download a file from the Internet by using Hypertext Transfer Protocol (HTTP) in Microsoft Internet Explorer, you may find that the download does not complete. As a result, you cannot download the file.



CAUSE
This behavior can occur if the file that you try to download is 2 gigabytes (GB) in size or larger. You cannot download files of this size with HTTP in Internet Explorer.



WORKAROUND
To work around this problem, you can configure a Web site that is dedicated to downloading large files. To do this, disable the HTTP Keep-Alives Enabled option for a Web site that Internet Information Services (IIS) hosts. To disable this option, follow these steps:
 * 1) Open Internet Information Services Manager.
 * 2) Right-click the Web site that requires the change, and then click Properties.
 * 3) Clear the HTTP Keep-Alives Enabled check box that is located on the Web Site tab, and then click OK.

Notes
 * The HTTP Keep-Alives Enabled option enables a client that connects to the Web server to reuse the current TCP/IP session when it downloads all content from the Web server. When you disable this option, an Internet Explorer client can then download files of up to 4 GB. However, it also forces the client to establish a new TCP/IP session with the Web server for every content object that is downloaded from the Web page. Additionally, it creates extra TCP/IP overhead for both the server and the client which will adversely affect page load times
 * Windows Internet Explorer 7 can reliably download files up to 4 GB in size without the previously described change to the server. There is no workaround to enable Internet Explorer 7 to download files larger than 4 GB in size.



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
For more information about Internet Explorer, visit the following Microsoft Web site:

http://www.microsoft.com/windows/ie/default.mspx

Keywords: kbnofix kbprb KB298618

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