TLS 1.0 and 1.1 retirement date in Office 365 to be October 15, 2020

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TLS 1.0 and 1.1 retirement date in Office 365 to be October 15, 2020

Microsoft is moving all of their online services to Transport Layer Security (TLS) 1.2+ toprovide best-in-class encryption, and to ensure their service is more secure by default.

Key Points:

  • Major: Retirement
  • Timing: October 15, 2020
  • Action: update or replace client devices as appropriate

How this affects your organization:

Once this change takes affect, all connections to Office 365 using the protocols TLS 1.0 and TLS 1.1 will no longer work.

What you should do to prepare:

Update or replace clients and devices that rely on TLS 1.0 and 1.1 to connect to Office 365, prior to October 15, 2020.

Additional information : https://docs.microsoft.com/en-us/microsoft-365/compliance/tls-1.0-and-1.1-deprecation-for-office-365?view=o365-worldwide

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