RFC 5246 - The Transport Layer Security (TLS) Protocol
Mar 20, 2020 TLS 1.2 vs TLS 1.1 - KeyCDN Support Oct 04, 2018 Differences between SSL and TLS Protocol Versions - wolfSSL Oct 07, 2010 TLS Version 1.1 Protocol Detection | Tenable®
TLS 1.2 is the default security protocol for Schannel and consumable by WinHTTP; Ensure your server is current on Windows Updates. This should include security update KB3161949 for the current version of WinHTTP. If you rely on SHA512 certificates; please see KB2973337. Windows Server 2012. TLS 1.2 is the default security protocol for Schannel.
The following resources provide guidance to help make sure that your clients are using TLS 1.2 or a later version and to disable TLS 1.0 and 1.1. For Windows 7 clients that connect to Office 365, make sure that TLS 1.2 is the default secure protocol in WinHTTP in Windows. How to Activate TLS 1.2 on Windows Server 2008 R2 and IIS
RFC 5246 - The Transport Layer Security (TLS) Protocol
TLS 1.2 vs TLS 1.1 - KeyCDN Support Oct 04, 2018 Differences between SSL and TLS Protocol Versions - wolfSSL Oct 07, 2010 TLS Version 1.1 Protocol Detection | Tenable®