The request was aborted: Could not create SSL/TLS secure channel

Question

We are unable to connect to an HTTPS server using WebRequest because of this error message:

The request was aborted: Could not create SSL/TLS secur

Answer 1

In case that the client is a windows machine, a possible reason could be that the tls or ssl protocol required by the service is not activated.

This can be set in:

Control Panel -> Network and Internet -> Internet Options -> Advanced

Scroll settings down to "Security" and choose between

• Use SSL 2.0
• Use SSL 3.0
• Use TLS 1.0
• Use TLS 1.1
• Use TLS 1.2