What is Transport Layer Security (TLS)

Transport Layer Security (TLS) is a protocol that provides authentication, privacy, and data integrity between two communicating computer applications. It's the most widely-deployed security protocol used today and is used for web browsers and other applications that require data to be securely exchanged over a network, such as web browsing sessions, file transfers, VPN connections, remote desktop sessions, and voice over IP (VoIP).

Google Chrome
Connections are automatically negotiated at the highest grade.
If you are using Google Chrome version 22 or greater, TLS 1.1 is automatically supported.  TLS 1.1 & 1.2 are automatically enabled from version 29 onwards.

Microsoft Internet Explorer
Open Internet Explorer
From the menu bar, click Tools >  Internet Options > Advanced tab
Scroll down to Security category, manually check the option box for Use TLS 1.1 and Use TLS 1.2

Registry path: HKLM SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols

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