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Internet Explorer Incorrectly Sends CONNECT Request to Web Server After 302 Redirect from an HTTPS Server

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Symptoms

If Internet Explorer is configured to use a proxy automatic configuration (PAC) file, Internet Explorer may incorrectly send a CONNECT request to a Web server after receiving a 302 redirect from an HTTPS server. You can see this behavior in a network trace or a Wininet log file. The error message that is displayed in Internet Explorer may vary, but the actual error response that is returned by most Web servers is "Server Error 500. Method not allowed."

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Resolution

To resolve this problem, obtain the latest service pack for Internet Explorer version 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
267954 How to Obtain the Latest Internet Explorer 5.5 Service Pack
The English version of this fix should have the following file attributes or later: 
   Date       Time       Version         Size     File name    Platform
   --------------------------------------------------------------------
   3/24/2001  9:57:44PM  5.50.4615.2400  479,504  Wininet.dll  Intel

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Workaround

To work around this issue, disable Internet Explorer automatic proxy caching. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
271361 How to Disable Internet Explorer Automatic Proxy Caching

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Internet Explorer version 5.5 Service Pack 2.

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Properties

Retired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.

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Keywords: KB294838, kbprb, kbie550presp2fix, kbfix, kbqfe, kbhotfixserver

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Article Info
Article ID : 294838
Revision : 4
Created on : 1/31/2007
Published on : 1/31/2007
Exists online : False
Views : 382