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HTTPS handshake to permid.org (for #475) failed. System.Security.Authentication.AuthenticationException

Hoi,

I'm reaching out to the community on behalf on a customer as they are trying to use Perm ID.


Via Chrome, it's running fine but the customer machine only allows Explorer and when running it from the company machine, tthey ahve the following error:


HTTPS handshake to permid.org (for #475) failed. System.Security.Authentication.AuthenticationException A call to SSPI failed, see inner exception

permid-apiintelligent-tagging-apiopen-permid-apierror-475
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@alexandra.hening

From my finding, it relates to the Cipher Suites used by permid.org. Refer to https://www.ssllabs.com/ssltest/analyze.html?d=permid.org, permid.org supports the following Cipher Suites for TLS 1.2.

1628226406076.jpeg

However, It looks like Windows 7 doesn’t support these cipher suites (https://social.technet.microsoft.com/Forums/ie/en-US/d1a10844-18fb-4400-b649-60183c5f58c6/how-to-add-cipher-suite-to-windows-7-tlsrsawithaes128gcmsha256?forum=w7itprosecurity).


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@alexandra.hening

I would like to confirm the problem statement. Does it mean that the OpenPermID website https://permid.org/ can't run properly on Internet Explorer?

I have tested it with the Internet Explorer on my Windows 10 machine. It can access the OpenPermID site properly.


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Hi, coming back to my question


the error that our customer is facing is the following:

We are trying to connect to the server using standard C# API’s as per below:


using (var client = new HttpClient())

{

var req = client.GetAsync("https://permid.org/1-55835312773?access-token=hZgpZjURGmowF1ZvGY65Rx8Lf8Qt2sho&format=json-ld").Result;

Console.WriteLine(req.Content.ReadAsStringAsync().Result);

}


During this connection establishment only- We are getting below error message exception:




please could you kindly point us in the right direction?


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