*For this entry exists the more relevant or more recent entry MC288472
check before: 2021-11-01
Online, World tenant, Windows Desktop, Mac
Admin impact, Retirement, User impact
3-month Reminder (First published December MC229143): To ensure that we meet performance expectations, we are updating the supported versions of Outlook for Windows that can connect to Microsoft 365 services.
Effective November 1, 2021, the following versions of Outlook for Windows, as part of Office and Microsoft 365 Apps, will not be able to connect with Office 365 and Microsoft 365 services.
Office and Microsoft 365 AppsOutlook for Windows Version
Office 201315.0.4970.9999 and older
Office 201616.0.4599.9999 and older
Microsoft 365 Apps for enterprise (formerly Office 365 ProPlus)1705 and older
Microsoft 365 Apps for business (formerly Office 365 Business)1705 and older
Timing: November 1, 2021
Action: Ensure Outlook for Windows client are updated accordingly
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Last updated 2 weeks ago