According to the following TechNet article ALPN and TLS client-side session resumption should be supported in SChannel in Windows Server 2012 R2.
https://technet.microsoft.com/en-us/library/hh831771.aspx
We've just upgraded our webserver to 2012 R2 but SSLLabs shows these features as still not supported. Are there any extra steps required to enable them with IIS 8.5? Has anyone else experienced the same issue?
TIA