Administrators managing Windows Server 2022 deployments have less than a year to prepare for a significant support transition. The operating system, which launched as a Long-Term Servicing Channel (LTSC) release in September 2021 following its March 2021 announcement, will shift into extended support next month after a five-year mainstream support window.
Microsoft outlined the timeline in a Friday announcement: "On October 13, 2026, Windows Server 2022 will reach end of mainstream support. The October 2026 security update will be the last mainstream support update available for this version."
The transition does not mean immediate abandonment. "After this date, Windows Server 2022 will transition to extended support, which includes security updates at no additional cost, and will continue to receive monthly security updates through October 14, 2031." Extended support will span five additional years, providing organizations with a longer runway for planning upgrades.
For environments leveraging Datacenter: Azure Edition, Microsoft has extended hotpatching availability to October 2027—one year beyond the mainstream support cutoff—offering a grace period for systems requiring this capability.
Migration path to Windows Server 2025
Microsoft is actively encouraging organizations to migrate to Windows Server 2025, the current LTSC release. The new version began rolling out to Windows Insiders in January 2024 and reached general availability in November 2024. Windows Server 2025 will maintain mainstream support until November 13, 2029, followed by five years of extended support concluding on November 14, 2034.
The company stated: "Windows Server 2025 is now the latest Long-Term Servicing Channel (LTSC) release for Windows Server. To help keep your environment protected and supported, plan to upgrade to Windows Server 2025 for full mainstream support. Evaluate upgrade options and begin deployment testing early to help ensure a smooth transition."
Organizations interested in evaluating Windows Server 2025 before committing to production deployment can access a free 180-day trial through the Microsoft Evaluation Center. Additional guidance on Windows servicing dates is available via the Windows Lifecycle FAQ page and the Lifecycle Policy search tool.
In related news, Microsoft quietly extended the Windows 10 Extended Security Updates (ESU) program for consumer devices by an additional year in June, allowing enrolled systems to receive security patches through October 12, 2027.