Windows 11 build 25900
| Build of Gallium | |
 | |
| OS family | Windows 11 (NT 10.0) |
|---|---|
| Version number | 10.0 |
| Build number | 25900 |
| Build revision | 1000 |
| Architecture | AMD64, ARM64 |
| Build lab | rs_prerelease |
| Compiled on | 2023-06-30 |
Windows 11 build 25900 is a build of Gallium, the 24H1 development semester of Windows as a service. It was accidentally flighted to a small number of Windows Insiders in the Canary Channel at some point in July 2023, although a connection to Microsoft's internal corporate network was required to download the build. The existence of this build was discovered by a user who checked updates via Windows Update in build 25393 and posted a screenshot in the Inside Windows Telegram group, same as 25868 and 25921.