Windows Server 2022 leaves mainstream support on October 13, 2026: what changes and how to plan the move to Server 2025 for your Mexico operation

On October 13, 2026 Windows Server 2022 leaves mainstream support. BleepingComputer flagged the date on September 16, less than a month out. If your Mexico plant or office runs a server with the domain, shared files or the ERP, this is about you.

It is not an emergency. Security patches keep coming until October 2031. What ends is new features and the support Microsoft includes for free. Here is what changes, what does not, and how to fold this date into the other October deadlines so your Mexico site gets one plan instead of four.

What actually changes on October 13

Microsoft splits the life of every Windows Server into two stages. During mainstream support you get new features and fixes for any bug. During extended support you only get security patches.

	Until October 13, 2026	From then until October 2031
Security patches	Yes	Yes
New features	Yes	No
Non-security fixes	Yes	No
Microsoft support	Included	Paid

Your server will boot the same way on October 14. The difference is that if something breaks and it is not a security issue, Microsoft will not fix it on Server 2022. The answer will be “upgrade to Server 2025”.

What does not change (so nobody panics at headquarters)

This is not the Windows 10 end of support. Server 2022 remains a supported system with monthly patches for five more years. Nobody has to migrate this weekend.

In our experience the real risk is the opposite of panic. The box drops into extended support, everyone relaxes, and the topic comes back in 2030 when the hardware is tired and the ERP vendor no longer certifies that version.

October 2026: four deadlines, one plan for Mexico

Everything lands in the same month. Put it in one table and treat it as one project with one budget for the Mexico site.

Date	What ends	Guide
October 13	Mainstream support for Windows Server 2022	This article
October 13	Support for Office 2021	The October cliff
October	Office 2016 and 2019 stop connecting to Microsoft 365	What to do with those licenses
October	Windows 10 ESU year one ends	Windows 10 a year later

If you are already replacing the Windows 10 PCs of the accounting team in Mexico, review the domain server they log into at the same time. One inventory covers all four decisions.

How to plan the move to Server 2025 without stopping the plant

1. Inventory. Which servers exist at the Mexico site, which version they run and what lives on each one: Active Directory (the domain, meaning the company users and passwords), files, printers, the ERP. There is almost always an old box nobody touches “because the system lives there”.
2. Licensing. On top of the server license, every user or device that connects needs a CAL (client access license). Check whether your global agreement, Software Assurance or subscription already covers the Mexico site before buying anything locally.
3. Virtualize. If the hardware is old, run Server 2025 as a virtual machine, a server that runs inside another one. You migrate one role at a time and, if something goes wrong, you roll back in minutes.
4. Change window. A weekend, in Mexico time, with a full backup and a tested restore before you start. Tested, not “configured”.

Planned from abroad, executed in Mexico

Most of this work is remote. You or your provider can plan and run the migration from Madrid or Chicago. But someone has to be at the rack in Querétaro when a disk fails or the server does not come back after the reboot. That is where IT smart hands in Mexico come in.

Let’s talk

What about your Mexico operation?

If you run Server 2022 in Mexico, you have five years. You do not have a reason to use them all. A one-afternoon inventory tells you what to migrate, which licenses to buy and what can be virtualized without new hardware.

At ProcessBi we inventory the servers, quote Server 2025 and CALs, and migrate or virtualize without stopping the operation, invoicing in MXN or USD.

Book your free assessment — we reply the same business day.