Microsoft KB Archive/937501

= FIX: Error message if you use the HttpWebRequest method to send a request in an application that is built on the .NET Framework 1.1: &quot;The underlying connection was closed&quot; =

Article ID: 937501

Article Last Modified on 10/30/2007

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APPLIES TO


 * Microsoft .NET Framework 1.1

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SYMPTOMS
Consider the following scenario. You create an application that is built on the .NET Framework 1.1. In the application, you use the HttpWebRequest method to send a request. The request is sent over the Secure Sockets Layer (SSL) by using the Sun Microsystems proxy.

In this scenario, you receive the following error message:

Message: The underlying connection was closed: Could not establish secure channel for SSL/TLS.

Status: SecureChannelFailure

Note This problem does not occur in the .NET Framework 2.0.



Hotfix information
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next .NET Framework 1.1 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
You must have the .NET Framework 1.1 Service Pack 1 installed to apply this hotfix.

Restart requirement
You do not have to restart the 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 item in Control Panel.



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, 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

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Keywords: kbfix kbexpertiseadvanced kbpubtypekc kbqfe KB937501

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