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New Minimum Version Requirements for Connecting Outlook to Office 365/Microsoft 365

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After November 1, 2021, only Outlook 2013 Service Pack 1 (with latest fixes) and later will be able to connect to Microsoft 365 services.

If you’re still running older versions of Outlook – including Outlook 2007, 2010, and Office 2013 versions earlier than 15.0.4971.1000 – please start working on a plan to upgrade by November 1.

Why is it important to upgrade now?

  • Older versions of Outlook are incompatible with upcoming Microsoft service changes, including authentication upgrades.
  • Clients using older versions of Outlook may encounter performance or reliability issues, as well as increased security risks.
  • Updated versions have new features to help improve efficiency and performance.

For Outlook upgrade guidance, visit Microsoft’s website.

Contact your YYCC account executive at 989.797.4075 if you have questions about these minimum requirements.

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