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Authentication failed because the remote party sent a TLS alert: 'HandshakeFailure'

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Posted on by NR-27110419-0

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Issue

HttpClient call fails with: " The SSL connection could not be established, see inner exception.Authentication failed because the remote party sent a TLS alert: 'HandshakeFailure'.The message received was unexpected or badly formatted." in version 25, SaaS environment. In Postman the same call works without problems.

I'm trying to call API with POST method
Client.Post(URL,RequestContent, ResponseMsg);

Expected behavior
The HttpClient call succeeds.

Actual behavior
The HttpClient call fails with the following
" The SSL connection could not be established, see inner exception.Authentication failed because the remote party sent a TLS alert: 'HandshakeFailure'.The message received was unexpected or badly formatted."

Versions:

AL Language: V14
Visual Studio Code:
Business Central: 25.0.23364.25412 (SaaS)

Operating System: Windows

Categories:

Business Central

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