MC240160 – Reminder: Disabling TLS 1.0 and TLS 1.1 in Microsoft 365

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check before: 2021-03-02

Product:

Office 365 general

Scope:

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Platform:

Online, World tenant

Links:

MC218794

Details:

This message post is a reminder of the ongoing progress of retiring TLS 1.0 and TLS 1.1 protocols in Microsoft 365. As previously communicated (MC126199 in Dec 2017, MC128929 in Feb 2018, MC186827 in July 2019, and MC218794 in July 2020), we are moving all our online services to Transport Layer Security (TLS) 1.2+ to provide best in class encryption, and to ensure our services is more secure by default. The changes to enforce TLS1.2+ in our service started on October 15, 2020 and will continue to propagate through all Microsoft 365 environments for the next few months. If you have not taken steps to prepare for this change, your connectivity to Microsoft 365 might be impacted. Note: If your organization has already taken steps to migrate from TLS 1.0 and 1.1, you can safely disregard this message

Change Category:
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Status:

Ring:

Created:
2021-02-17

updated:
2021-02-17

Change type:
Admin impact, Retirement, User impact

task type:
Awareness Plan For Change

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