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IT Pro: Preparing to use TLS 1.2 for Microsoft 365

Support for TLS below 1.2 will be deprecated after October 29.

Xink client version 3.2.6 and later supports Transport Layer Security (TLS) 1.2.

To provide best-in-class encryption Microsoft discontinued the support for TLS versions 1.0 and 1.1 in Microsoft 365.
Learn more.

If your Xink client version is 3.2.5.1 or older, please ensure to upgrade this to the latest version.

To find out what is the current version of your Xink Client right-click on the Xink client in the system tray and click on the Xink logo:

What is TLS 1.2?

TLS 1.2 is supported by all major browsers since 2013.

We have been already supported TLS 1.2 since 2018. If you didn’t update your system yet, we encourage you to do so ASAP, otherwise, the system will remain insecure and communication with Xink server will be impossible.

What are cipher suites?

A cipher suite is as secure as the algorithms that it contains. If the version of encryption or authentication algorithm in a cipher suite have known vulnerabilities the cipher suite and TLS connection are then vulnerable. Therefore, a common attack against TLS and cipher suites is known as a downgrade attack. A downgrade in TLS occurs when a modern client connects to legacy servers that are using older versions of TLS. Microsoft will discontinue support for TLS versions 1.0 and 1.1 in Microsoft(Office) 365 after October 15, 2020. Xink provides two more additional weeks for our clients follow suit.

Check if your system compatible with TLS cipher suites supported by Office 365.

Legacy systems are no longer supported by Microsoft are almost always lack of currently supported cipher suites. In that case system administrator or IT department in charge need to find a way to get those ciphers installed in their systems. 

For information about Windows supported cipher suites, please refer to:
https://docs.microsoft.com/en-us/windows/win32/secauthn/cipher-suites-in-schannel

Search Product and Services Lifecycle Information to find out if your system (especially security updates) are still supported by Microsoft:
https://docs.microsoft.com/en-us/lifecycle/products/

What's next?

When you have deployed the Xink client via the unattended (MSI Package), it's not automatically updated, and you should download the latest version from the Xink portal (Preferences > Downloads) and re-deploy it to your end-users.

When the Xink client was installed via the email invitation method, it's automatically upgraded (no worries).

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