As of yesterday, 14 October 2025, Windows 10 has officially reached its end of support. Of course, Windows 10 will not just stop working, but after yesterdays monthly security updates, there will be no more unless….
- Commercial Organisations pay for Extended Security Updates (ESU)
- Home/Consumers, agree to “cloud back-up” which will give them 12 more months or Security updates until October 2026.
Originally the impact of this deadline also meant that running Microsoft 365 Apps on Windows 10 would also not be supported. Microsoft have now clarified this and confirmed that your Microsoft 365 apps will keep working. There are, however, some important considerations for organisations still running Windows 10.
Windows 10 and Microsoft Apps – What’s Changing?
Microsoft 365 Apps are governed by the Modern Lifecycle Policy, which requires organisations to stay current with supported operating systems. Running Microsoft 365 Apps on an unsupported Operating Systems like Windows 10 can lead to performance degradation, reliability issues, and limited support options.
Microsoft has confirmed an extensive grace period to help organisations that have not yet moved to Windows 11:
- Feature Updates will continue for Office apps until:
- August 2026 for Current Channel
- 13 October 2026 for Monthly Enterprise Channel
- 12 January 2027 for Semi-Annual Enterprise Channel
- Security Updates for Microsoft Office apps, will be available until 10 October 2028, delivered through standard update channels – this is defined here.
Windows 10 and Microsoft 365 App – Support Expectations
Any organisation raising a support case for Microsoft 365 Apps running on Windows 10, will find that Microsoft will:
- Provide troubleshooting assistance only.
- Recommend migrating to Windows 11 if the issue is isolated to Windows 10.
- Not offer bug fixes or product updates for issues exclusive to Windows 10 environments (since this is out of support).
Actions if you are still running Windows 10
If your organisation is still using Windows 10:
- Plan your migration to Windows 11 as soon as possible- this might be new devices, upgrading or a mix of both.
- Pay for Extended Support Updates – these are available annually or tri-annual via your CSP partner, or direct from Microsoft.
- Ensure Office update channels are aligned with the extended support timelines.
- Review your compliance posture — unsupported OS environments may breach regulatory requirements.
Additional Considerations
This guidance also applies to subscription versions of Project and Visio desktop apps. For full lifecycle details across
Microsoft products, refer to the Office and Windows configuration support matrix. [learn.microsoft.com]