The Windows Build Tracker is a complete reference for Windows 11 build numbers, Windows Update history, and Insider Preview releases. This flight hub includes detailed listings for the Experimental, Beta, and Release Preview experiences (formerly the Canary, Dev, Beta, and Release Preview Channels), as well as stable General Availability (GA) updates, cumulative Knowledge Base (KB) updates, and Out-of-band (OOB) releases.
Use the dashboard tracker to search for builds, compare versions such as 26H1, 25H2, 24H2, and Future Platform, and follow features as they progress from Insider testing to public release. Updated with every new flight and Patch Tuesday, this database gives you a clear view of how Windows is evolving in real time.
I’m in the early stages of building this database, so it’ll take some time for all the updates to appear on this page. If you have ideas for new features or changes for this project, let me know at [email protected].
Also, whenever an ISO file for a specific build becomes available, a label will appear next to the preview in this list. However, ISO images are only available for a limited time, which means older previews may no longer be available when you try to download them.