Microsoft ends Windows 10 support on October 14, 2025, stopping security updates and technical support. Microsoft Defender will still offer limited protection. To stay secure, upgrade to Windows 11 or use the Extended Security Update (ESU) program if upgrading isn’t immediately possible. Review compliance needs accordingly.
Applies to: Microsoft Defender XDR
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).