Microsoft 365 Applications, Including Outlook, Could Stop Functioning Properly Without Windows 11 Update

In a recent announcement, Microsoft has once again emphasized the urgency for users to transition to Windows 11 as the end-of-support date for Windows 10 approaches. The company’s latest blog post highlights a significant update regarding Microsoft 365 compatibility, stating that support for Microsoft 365 on Windows 10 will cease, reaffirming the need for users to upgrade.

Microsoft 365 Apps will no longer be supported after October 14, 2025, on Windows 10 devices. To use Microsoft 365 Applications on your device, you will need to upgrade to Windows 11.

For further details, Microsoft’s support articles elaborate on this situation. They caution that users who choose not to upgrade may lose access to certain features alongside critical security updates, rendering their systems less secure and possibly non-compliant.

The blog post was recently modified to include details about Windows 10, expanding on information that previously pertained to Windows 7, 8, and 8.1. The older version of the guidance included the following:

Microsoft 365 apps are no longer supported on Windows 7, Windows 8 or Windows 8.1 now that these operating systems have reached their end of support dates. To avoid performance and reliability issues, we recommend that you move to a newer version of Windows.

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As a valuable Office subscriber, we aim to provide a stable Office experience. Thus, if you are utilizing Microsoft 365 on a machine running Windows 7, Windows 8, or Windows 8.1, we strongly advise migrating to a supported Windows operating system.

Once you transition to a supported Windows version, all Microsoft 365 feature and security updates will resume as normal. You can also run an Office update to ensure you have the latest version.

For more extensive information, you can check out the updated support documentation:

Microsoft 365 apps will no longer be supported on Windows 10 after it reaches end of support on October 14, 2025. Microsoft 365 apps are no longer supported on Windows 7, Windows 8, or Windows 8.1 given that these operating systems have concluded support. To avoid performance and reliability issues, we recommend that you move to Windows 11.

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As a valued Microsoft 365 subscriber, we are committed to providing a stable productivity experience. Therefore, if you’re using Microsoft 365 on a computer with Windows 7, Windows 8, or Windows 8.1, we urge you to switch to a supported Windows operating system. For those on Windows 10, the recommendation is to upgrade to Windows 11 before the support for Windows 10 ends on October 14, 2025.

Upon upgrading to a supported Windows OS, you will regain access to all Microsoft 365 feature and security updates as usual. At that time, you may perform an Office update to ensure you’re using the latest version.

Additionally, Microsoft has announced plans to automatically install the New Outlook for Windows app on all Windows 10 devices during the next Patch Tuesday, with the latest updates having already been released for January 2025.

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