In this article4 sections
What was announced
Microsoft announced Windows 11, version 26H2, on September 29, 2026. For eligible devices already running versions 25H2 or 24H2, it is delivered through an enablement package: a smaller update that activates components installed through earlier servicing updates. Microsoft describes a quick installation and restart for eligible devices; that is the company's description, not a timing result from our own testing.
Availability is gradual, and Microsoft may hold the update back from devices with known compatibility issues. An announcement that an update is available does not mean every computer will see the same offer on the same day.
Identify the computer you are updating
Start by checking Settings, then System, then About. Microsoft's support guide says the Windows specifications section shows your edition and version. Record both, along with the device model. This small step prevents confusion between a Windows edition, such as Home or Pro, and a release number, such as 24H2.
For a small business, make a short list of devices and the work each one supports. The reception computer, a mobile salesperson's laptop and a machine connected to specialist equipment may have different practical requirements. Knowing which device does what makes an update plan more useful than a blanket instruction to update everything immediately.
Check the backup you would actually use
Microsoft distinguishes several backup and recovery tools. Windows Backup can sync selected folders through OneDrive, while File History saves copies of personal files to an external drive or network location. A Recovery Drive contains system recovery files and does not include your personal documents. Having a recovery USB therefore does not establish that your working files are backed up.
Before starting, locate a recent copy of the files you cannot afford to lose. Open a sample file from that copy and check its date. Include material outside the folders you usually sync, such as locally saved project files or exports from business software. For an organization, use its approved backup process and ask the person responsible for it to confirm the recovery plan.
Choose a quiet window and verify the essentials
Microsoft recommends that organizations begin with targeted deployments to validate apps, devices and critical workflows before expanding. Applied to a small team, that means starting with a suitable computer and checking a few real tasks before scheduling the rest.
Write down the checks in advance: sign in, open a current document, connect to the printer, join a call and use any essential business application. Set aside time when a restart will not interrupt a customer or deadline. Once installation finishes, run those checks and note any problem with the device model and Windows version. If Windows Update has not offered the release, consult Microsoft's current release-health information before trying a different installation route.
Sources & further reading
This is a source-based news analysis, prepared with AI assistance and checked against the references above. It is not a hands-on product test. Read our editorial approach.