Error response received for the request: unable to create a channel

Hello everyone,

I have a dll written in C#, used to send a pdf to the adobe Webservice and get a word file.

When i test the dll with a c# projet, it works, but when i test the same dll with a delphi project i get an error message :

"Error response received for the request: La demande a été abandonnée : Impossible de créer un canal sécurisé SSL/TLS."

Does anybody have a solution ?

I made different tests, an add the following code:

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls
| SecurityProtocolType.Tls11
| SecurityProtocolType.Tls12
| SecurityProtocolType.Ssl3;*/

But the problem is the same !

Thanks in adavance