.Net Framework 4.6.1 not defaulting to TLS 1.2

Question

Our client have recently upgrade the security protocol to TLS 1.2. Therefore We have our application upgraded to 4.6.1 expecting the security protocol will be default to TLS

Answer 1

The reason why the security protocol did not default to TLS 1.2 is because there is no default value for this in .NET Framework 4.6.1. Sorry if this is reiterating what's already been said but I wanted to elaborate and I don't have enough reputation to comment.

There is no default value in 4.6.2 either, however like one of the commenters mentioned above, a console application does seem to default to TLS 1.2. I tried the exact same code in a website project targeting 4.6.2 and it did NOT default to TLS 1.2.

4.7 and above does have a default value of SecurityProtocolType.SystemDefault.

"This allows .NET Framework networking APIs based on SslStream (such as FTP, HTTP, and SMTP) to inherit the default security protocols from the operating system or from any custom configurations performed by a system administrator"

https://docs.microsoft.com/en-us/dotnet/api/system.net.servicepointmanager.securityprotocol?view=netframework-4.7#System_Net_ServicePointManager_SecurityProtocol