Windows 11 build 21306

Windows 10 build 21306.1001 is an unleaked build of Cobalt. An issue about this build was posted by a Microsoft employee on 1 February 2021.

A comment about this build is also available in  of Windows Feature Experience Pack build 321.4803.0.3, which stated that version 2.6 of   had just arrived with this build to the   branch, and that not all branches were at build 21306 yet.