Windows 10 build 21390.2025

Windows 10 build 21390.2025 is the third update of build 21390.1. This build was released to the Dev Channel on 14 June 2021 as a means of testing Microsoft's servicing pipeline.

This is the last Windows 10 Cobalt build, since it was released one day before the 21996 leak and 10 days before the Windows 11 announcement.