Windows 10 build 19603 (rs prerelease)

Windows 10 build 19603 is the thirteenth Insider Preview build of either Windows 10 20H2 or 21H1. This build was released on 2020-04-08 to the Fast ring.

Changes

 * File Explorer now has intergration with the Windows Subsystem for Linux.
 * Added user cleanup recommendations in Storage Settings.

Bugs and quirks

 * The Documents section under privacy settings has a broken icon, and a rectangle is shown in its place.