Windows 10 build 18290 (rs prerelease)

Windows 10 build 18290 is the fourteenth Insider Preview build of Windows 10 May 2019 Update. This build was released to Windows Insiders in the Fast Ring on 28 November 2018.

New features and changes

 * Extended the timebomb to 5 July 2019.
 * Added icons to the power and user menus of the Start menu, login screen and CTRL + Alt + Del prompt.
 * An option to manually synchronize the clock with the time server has been added, This can help in scenarios where the clock is out of sync or if the time service is disabled.
 * You can now see which app uses your microphone by hovering over the microphone notification icon.
 * Cortana and Search landing page has been updated to support the Light theme, along with some layout changes.
 * Windows Update will now display an orange indicator in the notification area when a reboot is required.
 * Other general changes, improvements, and fixes.

Bugs

 * The Settings app will crash after changing your account's password or PIN, if you want to change your password or PIN, use the CTRL + Alt + Del method to change the password.
 * Due to a merge conflict, the settings for enabling/disabling Dynamic Lock are missing from the sign-in settings.
 * Settings will crash when the option “View storage usage on other drives” is clicked, which is located under System -> Storage.
 * The Windows Security app may show an unknown status for the Virus & threat protection area, and sometimes it may not refresh properly.
 * The option to delete the previous version of Windows in the configuration for Storage Sense is not selectable.
 * Settings will crash when opening Speech Settings.
 * Some apps and games may cause the system to crash with a green screen with the error code  in.
 * An update block was put in place for this build for a small number of PCs that used Nuvoton (NTC) TPM chips with a specific firmware version (1.3.0.1). It was due to a bug causing issues with Windows Hello face/biometric/pin login, causing it to not work.