October 2026 will see the end of support for several Microsoft products, including Office LTSC 2021, which requires organizations to transition to LTSC 2024 or Microsoft 365 for continued support. Windows Server 2022 will exit mainstream support on October 13, 2026, while Windows 11 24H2 Home and Pro editions will also reach their end of life on the same date. The enterprise and education versions of Windows 11 23H2 will be supported until November 10, 2026. Publisher 2021 will be discontinued without a successor. Additionally, Entra ID Sign-In risk policies will be phased out on October 1, 2026, necessitating a transition to Conditional Access to maintain user and sign-in risk protection. SQL Server 2017 is scheduled for retirement in October 2027.