Comments on: System.Net.WebException: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel/ The blog for developers Sun, 05 Feb 2012 21:35:36 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Ravi http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel/comment-page-1/#comment-212569 Ravi Thu, 05 Jan 2012 18:00:49 +0000 http://dobrzanski.net/?p=284#comment-212569 Thanks. work like a charm.. Thanks. work like a charm..

]]> By: Jarosław Dobrzański http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel/comment-page-1/#comment-208386 Jarosław Dobrzański Mon, 26 Dec 2011 14:00:13 +0000 http://dobrzanski.net/?p=284#comment-208386 Terence, have you followed suggestions from my post? Also, from the top of my head, have you tried making the certificate trusted? This can be done with Certificates MMC Snap-in. Jarek Terence, have you followed suggestions from my post? Also, from the top of my head, have you tried making the certificate trusted? This can be done with Certificates MMC Snap-in.

Jarek

]]> By: karthik http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel/comment-page-1/#comment-206637 karthik Thu, 22 Dec 2011 09:50:40 +0000 http://dobrzanski.net/?p=284#comment-206637 Thanks for the code, You are the champ and your code worked like a charm... Thanks for the code, You are the champ and your code worked like a charm…

]]> By: terence chua http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel/comment-page-1/#comment-202663 terence chua Wed, 14 Dec 2011 15:16:47 +0000 http://dobrzanski.net/?p=284#comment-202663 Just wish to check, my development application as client is function well when the server is connect to http web service. now i try to move to other environment which having setup of https (or ssl). then i hit the error below:- "The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel" I already install the certificate provided by the web service. I try to use SOAPUI as tools to check it working fine from my client to the server. but my application just not work. need help urgently. thanks a lot Just wish to check, my development application as client is function well when the server is connect to http web service.

now i try to move to other environment which having setup of https (or ssl). then i hit the error below:-

“The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel”

I already install the certificate provided by the web service. I try to use SOAPUI as tools to check it working fine from my client to the server. but my application just not work.

need help urgently. thanks a lot

]]> By: Asif http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel/comment-page-1/#comment-178920 Asif Mon, 24 Oct 2011 07:47:59 +0000 http://dobrzanski.net/?p=284#comment-178920 Thanks for this great piece of code, it save my lot of time. Thanks for this great piece of code, it save my lot of time.

]]> By: Donald http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel/comment-page-1/#comment-135929 Donald Fri, 08 Jul 2011 16:22:25 +0000 http://dobrzanski.net/?p=284#comment-135929 Thanks, and to Lee Oades as well. I had to use his code to get it working. Thanks, and to Lee Oades as well. I had to use his code to get it working.

]]> By: vicky http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel/comment-page-1/#comment-128230 vicky Mon, 20 Jun 2011 08:47:51 +0000 http://dobrzanski.net/?p=284#comment-128230 Implementing this solution does solve the issue, but now i am not sure of thefact, whether we are bypassing certification check of our SMTP server or server which is receiving the mail. Essentially i am trying to send mail using (TLS) within a webpart embded in SharePoint environment. Any pointers on security risks, involved?? Implementing this solution does solve the issue, but now i am not sure of thefact, whether we are bypassing certification check of our SMTP server or server which is receiving the mail.

Essentially i am trying to send mail using (TLS) within a webpart embded in SharePoint environment.

Any pointers on security risks, involved??

]]> By: kabs http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel/comment-page-1/#comment-114182 kabs Thu, 12 May 2011 10:39:04 +0000 http://dobrzanski.net/?p=284#comment-114182 Thank u very much.Fixed my issue. Thank u very much.Fixed my issue.

]]> By: Viji http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel/comment-page-1/#comment-107404 Viji Thu, 21 Apr 2011 21:48:51 +0000 http://dobrzanski.net/?p=284#comment-107404 thanks! this works for me! thanks! this works for me!

]]> By: Balamurugan http://dobrzanski.net/2009/04/01/systemnetwebexception-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel/comment-page-1/#comment-99016 Balamurugan Sat, 26 Mar 2011 09:35:12 +0000 http://dobrzanski.net/?p=284#comment-99016 really its very helpful.. really its very helpful..

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