Ah yes there was also (apart from the client modification to force use of SSL/TLS) the old TLS 1.0 / 1.1 in Win 7 that needs to be updated. This was link @Gary provided in the below thread for how to enable TLS 1.2 if you need it as well if you still get any errors with TLS 1.0 / 1.1 not supported.
https://manage.accuwebhosting.com/knowledgebase/3008/How-do-I-enable-TLS-1-2-on-Windows-7.html