Windows Server 2016 Ends January 12, 2027: What to Do Now

Windows Server 2016 end of support arrives on January 12, 2027, and the server stops getting security updates after that. If the file server, accounting server, or door-system box in your back room still runs it, you have about 11 weeks to pick a plan. This post covers how to check, what your options are, and what to ask your IT provider this week.

When is Windows Server 2016 end of support?

Windows Server 2016 reaches end of support on January 12, 2027, as of October 25, 2026. Microsoft's Azure Arc documentation states: "Windows Server 2016 reaches end of support on January 12, 2027." Microsoft's lifecycle page for Windows Server 2016 lists the same extended end date and covers the Datacenter, Essentials, MultiPoint Premium, and Standard editions. Microsoft also says, as BleepingComputer reported, that "the January 2027 Windows security update will be the last update available for this version."

What happens to a server after support ends?

After January 12, 2027, the server keeps running, but it stops getting security fixes. Per Microsoft's announcement in the BleepingComputer report, devices running Windows Server 2016 "will no longer receive monthly security updates." Every flaw found after that date stays open on your network. A server holds your shared files, your accounting data, and often your logins, so an unpatched one is a prime target. Your cyber insurance questionnaire and any client contract with a security clause may also ask whether your systems are still supported.

How do I know if my business runs Windows Server 2016?

You check the server itself or ask whoever manages it. Plenty of small offices in Battle Creek, Kalamazoo, Portage, and Marshall run everything in Microsoft 365 and have no server at all, so this may not apply to you. If you do have one, it is usually a box in a closet or a virtual machine your IT provider set up a few years ago.

1. On the server, press the Windows key and R, type winver, and press Enter. The window names the version.
2. Or ask your IT provider: "Which of our servers run Windows Server 2016, and what is the plan for each?"
3. If you run the Essentials edition, ask about it by name. Support for its Essentials features, including Remote Web Access, ends on the same date, per the BleepingComputer report above.

What are my options before January 12?

You have three real options: upgrade, move the workload, or pay for extended updates as a bridge.

1. Upgrade to Windows Server 2025. It is the current version, and it has the longest runway. Windows Server 2025 mainstream support ends in November 2029, and extended support runs to November 14, 2034, per the BleepingComputer report. Most shops build a new server and move the data over.
2. Move the workload. If the server only holds shared files, SharePoint or OneDrive in your Microsoft 365 plan may replace it. An app that only runs on the old server may have a hosted version from its vendor, so ask them before you buy hardware.
3. Buy extended updates as a bridge. Microsoft says extended updates for Windows Server 2016 "provide Critical and Important security updates for up to three years, through 2030." They cover only the Standard and Datacenter editions, billing through Azure Arc begins January 13, 2027, and buying them takes Software Assurance or a server subscription license, per the Azure Arc page above. Essentials is not on that list. Treat it as a bridge to an upgrade, not as the plan.

What should I do this week?

Do these four things in the next seven days:

1. List every server in the office and the version it runs.
2. Ask your IT provider for a written plan and a quote for each Windows Server 2016 box.
3. Confirm your backups restore. Test one file, not just the green checkmark.
4. Run the free email security check on your domain, since old servers often send mail too.

If you do not have an IT provider, that is a gap worth closing before January. Parallax works with Southwest Michigan shops on automation and AI consulting, and if the old server also hosts your site, our web presence work covers that move. This post reflects Microsoft's published dates as of October 25, 2026, so recheck the lifecycle page before you sign anything.