Microsoft KB Archive/181145

= Save This Program To Disk Option Missing During File Download =

Article ID: 181145

Article Last Modified on 1/22/2007

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APPLIES TO


 * Microsoft Internet Explorer 5.0
 * Microsoft Internet Explorer 4.01 Service Pack 1
 * Microsoft Internet Explorer 4.01 Service Pack 2
 * Microsoft Internet Explorer 4.0 128-Bit Edition
 * Microsoft Internet Explorer 5.0
 * Microsoft Internet Explorer 4.01 Service Pack 2
 * Microsoft Internet Explorer 5.0
 * Microsoft Internet Explorer 4.01 Service Pack 1
 * Microsoft Internet Explorer 4.01 Service Pack 2
 * Microsoft Internet Explorer 4.0 128-Bit Edition
 * Microsoft Windows 98 Second Edition

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This article was previously published under Q181145



SYMPTOMS
When you try to download more than two files at the same time, the "Save This Program To Disk" option may not appear until one or more of the previous downloads is finished.



CAUSE
This behavior can occur because Internet Explorer versions 4 and 5 strictly adhere to the Request for Comment (RFC) specifications for HTTP 1.0 and HTTP 1.1, which state that clients must not create more than two (HTTP 1.1) or four (HTTP 1.0) simultaneous keep-alive connections per server.



RESOLUTION
To work around this issue, do not try to download more than four files at the same time.

For additional information about this issue, please see the following article in the Microsoft Knowledge Base:

183110 INFO: WinInet Limits Connections Per Server

Keywords: kbenv kbprb KB181145

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