SSIS Web Service task SSL errors

[how2trainyourdragon]

I've tried different credentials, target server versions, etc. hitting our Primavera WSDL.

Works great in any browser.

Via the Web Service SSIS task, I get an error when running the package:

Target Server 2016:

--1. Connection manager "HTTP Connection Manager 1": SSL certificate response obtained from the server was not valid. Cannot process the request.

Target Server 2019:

--2. Microsoft.SqlServer.Dts.Tasks.WebServiceTask.WebserviceTaskException: The Web Service threw an error during method execution. The error is: The request was aborted: Could not create SSL/TLS secure channel

 

[how2trainyourdragon]

Not sure if makes a difference, but just told by db/server admin this web service is setup for cookie authentication.