Windows 10 build 18327.1

Windows 10 build 18327.1 is a build of Windows 10 May 2019 Update. A Preinstallation Environment based on this build was released on 5 February 2019 as a part of a preview version of the Assessment and Deployment Kit, although the full build was never officially released via the Windows Insider Program.

A screenshot of this build's Pro SKU in the American English language was posted to the BetaWiki Discord server on 9 August 2021, but was removed shortly afterwards. The full build was then uploaded in x64 Arabic on 4 July 2022, followed by its x64 British English and x86 Canadian French counterparts on 10 July 2022. The full build was uploaded in other languages to Internet Archive on 29 July 2022 in the x86 architecture.