TLS 1.1 to be Decommissioned to Make Way for Updated Security Protocol (2024)

FAQs

Is TLS 1.1 obsolete? ›

On August 1, 2023, Microsoft announced that support for TLS 1.0 and 1.1 will be removed from future Windows releases. This change has been on the horizon for a while. Microsoft recommended services upgrade away from TLS 1.0 and 1.1 by the end of 2020.

The internet standards and regulatory bodies have deprecated or disallowed TLS versions 1.0 and 1.1 due to several security issues. Starting with Windows 11 Insiders Preview and Windows Server Insiders Preview releases in 2024, they will be disabled by default.

Transport Layer Security (TLS) is an online security protocol that provides a secure connection by encrypting all data between servers and email clients. Due to increased attacks and security vulnerabilities in previous years, we will no longer support TLS versions 1.0 and 1.1.

TLS 1.0 and 1.1 are vulnerable to downgrade attacks since they rely on SHA-1 hash for the integrity of exchanged messages.

Under TLS Versions, you will see the TLS protocol version(s) currently selected. To update the protocol, simply click edit. Next, choose your desired protocol based on your requirements and hit Save Changes. Please note that you can not disable TLS v1.

With TLS 1.0 and TLS 1.1 disabled by default, an SSPI application that only allows these versions will fail to connect.

What is the latest TLS version? ›

TLS 1.3 is the latest version of the TLS protocol. TLS, which is used by HTTPS and other network protocols for encryption, is the modern version of SSL. TLS 1.3 dropped support for older, less secure cryptographic features, and it sped up TLS handshakes, among other improvements.

For example, Windows 10 uses TLS 1.2 while Windows 11 uses TLS 1.3.

Step 1: Navigate to "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols". Create a key named "TLS 1.1" with two DWORDs for both TLS 1.0 & 1.1: "DisabledByDefault=1" & "Enabled=0".

To open Internet Options, type Internet Options in the search box on the taskbar. You can also select Change settings from the dialog shown in Figure 1. On the Advanced tab, scroll down in the Settings panel. There you can enable or disable TLS protocols.

To do this, open the command prompt by clicking the Windows start button, typing “cmd” and then pressing enter. Once the command prompt window is open, type “netsh trace show tls” and press enter. This will show you the TLS protocol version that is being used.

We have already disabled TLS 1.0 and 1.1 for most Microsoft 365 services in the world wide environment. For Microsoft 365 operated by 21 Vianet, TLS 1.0/1.1 was disabled on June 30, 2023. As of October 31, 2018, the Transport Layer Security (TLS) 1.0 and 1.1 protocols are deprecated for the Microsoft 365 service.

Note 6: A Server that does not support TLS 1.1 and TLS 1.2 that connects to another site as a Client can support TLS 1.1 and TLS 1.2 by enabling it through the Internet Options in IE. Browse to Tools > Internet Options > Advanced. Under the Security section, you would see the list of SSL Protocols supported by IE.

What is the difference between TLS 1.3 and TLS 1.2? TLS 1.3 is the latest version of the TLS protocol. TLS, which is used by HTTPS and other network protocols for encryption, is the modern version of SSL.