This highlights Microsoft’s commitment to securing access to the Office 365 platform, ensuring companies progressively upgrade their desktop software to later, more secure, and feature-rich versions.įor most organizations, whose mailboxes are in Office365/Exchange Online, typically a subscription covering the Office365 desktop application suite ensures users always have access to the latest version of applications. Well, for organizations still running Outlook/Office version older than Office 2013 SP1 (with latest fixes), and with mailboxes in Office365/Exchange Online post-November 1, users will no longer be able to access their mailboxes via the Windows desktop client.

This follows on from Microsoft ending support for older versions of Microsoft Office such as the once hugely popular version Office 2010, which ended October 13, 2020. “After November 1, 2021, only Outlook 2013 Service Pack 1 (with latest fixes) and later will be able to connect to Microsoft 365 services.” In a Microsoft blog article published August 27, the software giant announced Outlook clients older than Outlook 2013 SP1 (with latest fixes) will be blocked from connecting to Microsoft 365 services after November 1, 2021. By Christian Wilmot, Client Technical Manager – EMEA

Microsoft outlook 2013 free version