Force TLSv1.2 for applications on .NET Framework 2.0/3.5 on WinServer2019

Question

My application (written in .NET Framwork 2.0/3.5) consumes a webservice that only responds in TLS v1.2. How can I make it work sing I am using Windows Server 2019 and microsoft articles only explain how to do it in windows 2008 and 2012?

Answer 1

Hello @Bruno Sousa ,

Thank you for posting here.

From the link below, we can see:
NET Framework 4.6.2 and later supports TLS 1.1 and TLS 1.2. Confirm the registry settings, but no additional changes are required.

Update to enable TLS 1.1 and TLS 1.2 as default secure protocols in WinHTTP in Windows
https://support.microsoft.com/en-us/help/3140245/update-to-enable-tls-1-1-and-tls-1-2-as-default-secure-protocols-in-wi

We may need to update NET Framework to 4.6.2 or later, then write application in NET Framework to 4.6.2 or later on Windows server 2019.

Hope the information is helpful.

Best Regards,
Daisy Zhou