Quick answer: Microsoft's lifecycle page lists the end of extended support for Windows Server 2016 as 12 January 2027. Servers keep running after that, but Microsoft stops publishing security updates. Microsoft's upgrade table lists direct in-place upgrades from 2016 to 2019, 2022 and 2025. Before you upgrade an older server, check the processor against Microsoft's requirements, the server maker's support list for your exact model, and your licences.
This page covers the hardware side. For the complete plan including the options and a 12-week timeline, read Serverwale's Windows Server 2016 end-of-support guide. Dates and support lists change, and this is not licensing advice.
| Product | Start | Mainstream end | Extended end |
|---|---|---|---|
| Windows Server 2016 | 14 Oct 2016 | 11 Jan 2022 | 12 Jan 2027 |
From 29 October 2026 that leaves about 75 days. Extended support covers security updates only. Software on top has its own dates, so check your database and application versions as well.
Microsoft's "Plan your Windows Server upgrade path" page lists these in-place upgrade paths using installation media:
| From | To 2019 | To 2022 | To 2025 |
|---|---|---|---|
| Windows Server 2012 R2 | Yes | No | Yes |
| Windows Server 2016 | Yes | Yes | Yes |
| Windows Server 2019 | n/a | Yes | Yes |
| Windows Server 2022 | n/a | n/a | Yes |
Microsoft also notes that, starting with Windows Server 2025, a nonclustered system can upgrade up to four versions at a time, and that you should back up before any in-place upgrade, clean install or migration. If you are moving to new hardware, Microsoft says migration is the better method.
Microsoft's hardware requirements list these as the minimum processor features: a 1.4 GHz 64-bit processor, x64 instruction set, NX and DEP, CMPXCHG16b, LAHF/SAHF and PrefetchW, second level address translation (EPT or NPT), SSE4.2 and POPCNT. Use Microsoft's Coreinfo tool to see what your processor supports. Check your exact CPU model before you buy; our guides to Intel Xeon processors, HP ProLiant Gen9 vs Gen10 and Dell PowerEdge R630 to R740 explain the generations.
Microsoft says a TPM is needed only for certain features such as BitLocker, and that any TPM present must be 2.0. Secured-core server needs more: DMA remapping (Intel VT-d or AMD-Vi), Kernel DMA Protection, DRTM, TPM 2.0, Secure Boot and virtualization-based security. UEFI 2.3.1c firmware is listed for Secure Boot. Update firmware before an upgrade; read our firmware and BIOS update guide.
| Situation | Better route |
|---|---|
| Model is on the maker's support list, hardware is healthy, firmware is current | In-place upgrade or clean install on the same server |
| Model is not on the support list, or drivers are missing | Move the workload to a supported server |
| Server is small on RAM or slow for the workload | Move to a newer refurbished server, see refurbished servers or compare new vs refurbished |
| Several old servers, light loads | Consolidate into virtual machines on one host; see virtualization host sizing |
| You need new hardware with a custom spec | Look at custom tower servers |
Retire the old machine safely: follow the decommissioning and data wiping guide, or sell or exchange it. Serverwale's Dell vs HP servers page and tower servers help with the replacement choice.
Related Serverwale reading: the backup and disaster recovery guide, the DPDP Act infrastructure guide (an unsupported operating system is hard to defend as a security safeguard), the server hardening checklist, the small data centre setup guide and the Dell server rental page if you prefer to rent while you migrate.
When does Windows Server 2016 support end? Microsoft's lifecycle page lists mainstream support as ended on 11 January 2022 and extended support as ending on 12 January 2027. After that date Microsoft stops publishing free security updates for it.
Can I upgrade Windows Server 2016 directly to 2025? Microsoft's upgrade-path table lists in-place upgrade from Windows Server 2016 to 2019, 2022 and 2025 as supported. Each upgrade needs its own licence, and your hardware must work with the new version, so check the server maker's support list for your exact model first.
What CPU does Windows Server need? Microsoft's hardware requirements list a 1.4 GHz 64-bit processor with x64 instructions, NX and DEP, CMPXCHG16b, LAHF/SAHF and PrefetchW, second level address translation (EPT or NPT), SSE4.2 and POPCNT. Microsoft suggests the Coreinfo tool to check what a processor supports.
Do I need TPM 2.0 for Windows Server? Microsoft lists TPM as required only for certain features, such as BitLocker Drive Encryption, and says a TPM that is present must be version 2.0. Secured-core server needs additional hardware features. Check which features you plan to use.
Should I upgrade my old server or replace it? If the server's maker lists support for the new Windows Server version and the hardware is healthy, an in-place upgrade or a clean install can be enough. If the model is not on the support list, or the server is slow, small on memory or out of warranty, moving the workload to a newer refurbished or new server is often the cleaner path. Compare both options for your workload.
Tell us the current server model, the Windows Server version, the roles it runs and your city, and we will suggest an upgrade or replacement route. Serverwale · Phone +91-87962-44410 · WhatsApp https://wa.me/918796244410 · Burari, Delhi 110084, India. See our refurbished servers, server AMC, live stock or contact us.
Sources: Microsoft Learn, Windows Server 2016 lifecycle, Hardware requirements for Windows Server and Plan your Windows Server upgrade path, all read on 29 October 2026. The "75 days" figure and the route table are Serverwale's own arithmetic and advice.