← cd ~/deadlines
// deadlines
Microsoft retirements and changes: October 2026
10 retirements, end-of-support dates and changes across Exchange Online, Windows, Windows Server, Microsoft 365, Entra ID, Intune.
Exchange Online
- October 2026 EWS disabled by default Exchange Online
Windows
- 13 Oct 2026 Windows Server 2012 / 2012 R2 Extended Security Updates end Windows
- 13 Oct 2026 Windows 11 24H2 Home and Pro end of servicing Windows
- 13 Oct 2026 Windows 10 Enterprise 2016 LTSB reaches end of support Windows
- 19 Oct 2026 Secure Boot Windows Production PCA 2011 certificate expires Windows
Windows Server
- 13 Oct 2026 Windows Server 2022 mainstream support ends Windows Server
Microsoft 365
- 13 Oct 2026 Office LTSC 2021 reaches end of support Microsoft 365
Entra ID
- 23 Oct 2026 Entra Connect 2.5.79.0 reaches end of support Entra ID
- 30 Oct 2026 Third-party SMS and voice providers available Entra ID
Intune
← September 2026 November 2026 → All of 2026 Add every deadline to your calendar
Spotted something out of date or wrong? Tell us and we'll fix it.