Good morning Dathuraj,
You could try to take ssl authentication into your own hands and this link could start you off. It is pretty difficult and a lot of work and I am not sure you are really looking for this but here it is:
Installing and Configuring OpenSSH on Windows Server 2019 (microsoft.com)
I think that your 2019 server expects higher grade authentication then it gets from your database server. Thus you need either to see your 2019 ssl authentication downgraded or your windows 2003 ssl authentication upgraded.
I've no experience succesfully integrate ssl. Yet.
I will be around the coming couple of weeks to see and opinonate on what questions are brought here.