The underlying connection was closed. Could not establish trust relationship for the SSL/TLS secure channel

Question

I am using VB.NET 2.0 and my server is Windows Server 2005, XP operating system.

I am facing this error on server:

The underlying connection was closed. Could not establish trust relationship for the SSL/TLS secure channel.

And not in my local environment which has Windows 7 operating system .

Can anyone help in this ?

Answer 1

You can see from the table at Support for SSL/TLS protocols on Windows that Windows Server 2003 and Windows XP only support TLS 1.0; they do not natively support TLS 1.1 or later.

You can either look for third-party software to enable the use of the required TLS version or abandon the use of Windows Server 2003 and Windows XP.