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System.Net.WebException: 'The request was aborted: Could not create SSL/TLS secure channel.'

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Hello Community,

I'm trying to implement a web api call in X++ (D365FO).

Unfortunately, I'm facing an issue during the execution of the GetReponse() method below.

Extract of X++ Code

      str user = /xxxxx/;
      str pass = /xxxxxxxxxxxxxxxxxxx/;
      System.Text.Encoding encoding = System.Text.Encoding::UTF8;
System.Byte[] bytes = encoding.GetBytes(user + /:/ + pass);
System.String base64 = System.Convert::ToBase64String(bytes);

System.String headerKey = /Authorization/;
System.String headerValue = /Basic / + base64;
request = System.Net.WebRequest::Create(API URL);

System.Net.WebHeaderCollection headers = request.Headers;
request.set_Headers(headers);
request.Method = /GET/;

    response = request.GetResponse();

Error Message during the execution of GetResponse() Method
The request was aborted: Could not create SSL/TLS secure channel.

Investigating in this forum, it seems that some people faced this issue in the past, but I didn't find a clear fix.

Can someone please help ?

Thanks

Regards,

Samir

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Martin Dráb 237,965 Most Valuable Professional on at

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Try changing the security protocol to TLS 1.2:
System.Net.ServicePointManager::SecurityProtocol = System.Net.SecurityProtocolType::Tls12;

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Community member 2 on at

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Hi Martin,

Thx for your feedback.

I've already tried this but it didn't work.

Regards,

Samir

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Kevin Xia Microsoft Employee on at

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Hi,

You can check out this old thread where the questioner has a similar question to yours: "The request was aborted: Could not create SSL/TLS secure channel." On API Call (dynamics.com). It comes out to be the ciphers that were not configured on D365 FnO VMs

Best regards,

Kevin

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