HTTP request ERROR FlightXML2

Hello, I’m trying to perform a first test with the example code I found on the web

(Documentation - Flight Status API / Flight Tracking API / FlightAware API - Commercial Services - FlightAware)(Visual Studio)

I have the code exactly the same as in the example if I have performed all the steps described in the example, but when performing the test I get the following error.

“An error occurred while making the HTTP request to This could be due to the fact that the server certificate is not configured properly with HTTP.SYS in the HTTPS case. This could also be caused by a mismatch of the security binding between the client and the server.”

What is the reason for this error? and how do I solve it?

Thanks for all :slight_smile:

This is normally the result of an older .NET install not properly negotiation the correct TLS version. More information can be seen here: