If you are not able to manually change time in Windows 11/10, restart Windows Time Service, use Terminal to change time & ...

This post covers how to show Full or Abbreviated Date and Time in System Tray of Windows 11 using the Settings app, GPEDIT, and Regedit.

Windows 11's January 28 optional update has fixed a long-standing issue in Windows 11 24H2 that prevents non-admin users from changing their time zone in Date & Time Settings.