C# Web API Test Call

[g_tums]

Hello everyone,i am having problems calling the visa url  sandbox for authentication testing purposes using c#  but i keep getting the error.

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

Any help would be appreciated.

[API_Products]

Hi,

Thanks for asking your question in the Visa community forum. Can you please let me know what API you were trying to call?

To resolve the error, please create a new .p12 using the command line below.
  
Command line:
openssl pkcs12 -export -out p12certfile.p12 -inkey example-key.pem -in cert.pem
  
After that, please try to call the helloworld method and see if you get a succesful response. If the error persists, can you please share your request header and snapshots of the error?

Thank you,
Diana

[g_tums · Accepted solution]

Thanks DianaTran-Yee for the reply.It worked.