Office 365 – Updated retirement date for TLS 1.0/1.1

As you may be aware, Microsoft is on the move to deprecate older TLS versions (TLS 1.0 and TLS 1.1) and make the switch to TLS 1.2.

It has been announced last year (July 2019), retirement date for TLS 1.0 and TLS 1.1 was initially scheduled for June 2020 but with the unprecedent situation it has been postponed.

Well, the updated date for TLS 1.0 and TLS 1.1 retirement is now defined to October 15, 2020

Remember, Microsoft is providing a TLS usage report to help you identify the devices still using TLS 1.0 or TLS 1.1

You can go straight to https://servicetrust.microsoft.com/AdminPage/TlsDeprecationReport/Download to download a CSV report of devices still connecting with TLS 1.0/1.1

or access your Security portal (https://security.microsoft.com/) and access the Secure Score blade

and search for “Remove TLS 1.0/1.1 and 3DES Dependencies” using Improvement actions tab to check the status; if your status is Completed you are good to go, otherwise follow the recommended steps