Approaching 2026 Software End‑of‑Life (EOL) Deadlines
Overview
Several major software ecosystems have issued firm End‑of‑Life (EOL) notices for 2026. These deadlines mean the affected products will lose all security support, leaving systems vulnerable unless upgraded.
| Product | EOL Date | Key Impact |
|---|---|---|
| Windows 11 (Version 24H2 – Home & Pro) | October 13, 2026 | End of servicing; no more security or feature updates. Upgrade to newer builds or Windows 12. |
| Microsoft Office 2021 / Office LTSC 2021 | October 13, 2026 | Support closure; migrate to Microsoft 365 or next LTSC release. |
| .NET 8 & . NET 9 | November 10, 2026 | Both standard and LTS versions reach final EOL. Developers must plan migration to .NET 10. |
| SQL Server 2016 | July 14, 2026 | Already in absolute EOL phase; upgrade to SQL Server 2022 or Azure SQL. |