Upgrade to Supported Version of Microsoft 365

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30-Day/Final Reminder

To ensure that Microsoft meets performance expectations, they are updating the supported versions of Outlook for Windows that can connect to Microsoft 365 services.

Key Points from this Reminder:

  • Major: Retirement
  • Timing: Beginning November 1, 2021 and will be complete by mid-May 2022.
  • Action: Ensure Outlook for Windows client are updated accordingly

Starting November 1, 2021, the following versions of Outlook for Windows will not be able to connect with Office 365 and Microsoft 365 services.

Upgrade to Supported M365 Version

How this will affect your business:

If you are using a version that is newer than the minimum version requirements (listed above), but not the supported version, you may experience connectivity issues. Supported versions of Outlook for Windows in Office and Microsoft 365 will continue to connect to Microsoft 365 services as expected.

To see a list of the currently supported versions, visit:

What you need to do to prepare:

Microsoft is recommending that all users upgrade to the supported versions of Office and Microsoft 365 Apps.

Contact us to discuss how this retirement may impact your business.

One Team. One Call. One Goal – Helping Your Business Grow

Source: Microsoft Corporation 30-day/Final Reminder (MC229143 – DEC ’20 and MC274503 – July ’21)

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