Windows 11 26H2 is expected to begin public rollout around the week of September 28 or early October. Microsoft has released evaluation ISOs for enterprise users to assess compatibility before broader deployment. The release of these ISOs indicates that the public rollout is imminent. Windows 11 26H2 is built on the same platform as versions 24H2 and 25H2, which allows for a smoother upgrade experience. Support for Windows 11 25H2 ends on October 12, 2027, and for 24H2 even sooner, prompting the introduction of 26H2 to provide users with a new support window.
Windows 11 26H2 will be available as an optional feature update and will take about five minutes to install for users with up-to-date systems running 24H2 or 25H2. Eligibility for the update includes any PC currently running Windows 11 24H2 or 25H2. The rollout is expected to occur on a Tuesday, with potential dates of September 29 or October 6. Not all eligible PCs will receive the update simultaneously, and users can manually check for updates or download ISOs as needed.