Windows 10 build 18204

Windows 10 build 18204 is the first build of Windows 10 19H1 which was released on 2018-07-25 to insiders in the Skip Ahead Ring. It is largely identical to RS5 build 17723.

Microsoft Edge

 * New Microsoft Edge Group Policies
 * Enabling/Disabling full-screen mode, printing, favorites bar and saving history
 * Prevent certificate overrides
 * Configure the home button and startup options
 * Setting the New Tab page
 * Managing extensions
 * The Microsoft Edge XSS Filter has been retired

Time Accuracy and Traceability improvements

 * Leap second support has been added
 * Precision time protocol has been added
 * Software timestamping - eliminate the software delay introduced by the Windows networking stack

Other

 * Mixed Reality Flashlight
 * Emoji 11
 * Improved Kiosk Setup Experience - the Set up a kiosk tab has been added to Settings
 * Other general fixes and improvements