https://www.theregister.co.uk/2019/04/25/microsoft_password_expiration/

Microsoft has finally decided to get rid of password expiration policies in Windows because forcing people to reset their passwords periodically harms security.

Word arrived from Redmond via Wednesday's draft release of the security configuration baseline settings for Windows 10 version 1903. The release, available as a zipped download of spreadsheets, configuration files, and other documents, includes a variety of changes to the foundational security settings from the previous versions of Windows 10 and Windows Server 2019.