Windows 10 build 19042.421

Windows 10 build 19042.421 is the third Insider Preview of Windows 10 version 20H2. It was released on July 24, 2020 to all Insiders that are in the Beta Channel.

Changes

 * Theme-aware tiles for the Start menu. This feature was ported from Dev Channel build 20161.
 * Alt+Tab experience between apps and websites. This feature was ported from Dev Channel build 20161 and requires a Canary or Dev build of Edge.
 * Improved quick access to tabs for pinned website in Microsoft Edge. This feature was ported from Dev Channel build 20175 and requires a Canary or Dev build of Edge.
 * A more personalized taskbar for new users. This feature was ported from Dev Channel build 20161.
 * Improved notification toasts. This feature was ported from Dev Channel build 20161.
 * Migrated the information in the System section of Control Panel to the Settings app. Links in Control Panel that would take you to the System section now take you to the Settings app. This feature was ported from Dev Channel build 20161.
 * You can now copy your device information in Settings. This feature was ported from Dev Channel build 20161.
 * Notification that asks the user if they want to switch to tablet mode now no longer appears when you switch to said mode on 2-in-1 PCs. This change was ported from Dev Channel build 20161.
 * Modern Device Management (MDM) improvements.