Published: October 2022 (Updated status) Platform: Windows 10 Pro (x64) Build String: 10.0.19045.2006 Overview Windows 10 Pro Build 19045.2006 is a non-security (optional) preview update released for the final stable version of Windows 10, known as version 22H2. This build is significant because it represents a "C-release" (third week of the month) update, designed to test fixes that would later be rolled into the following month's "Patch Tuesday" (B-release).