Windows 10 build 20215

Windows 10 build 20215 is the thirteenth Insider Preview build of Iron, the 21H1 development semester of Windows as a service. This build was released to Windows Insiders in the Dev Channel on 16 September 2020.

Changes

 * The search results on the taskbar's search experience now support the dark theme.

Bugs

 * The update process to this build has a chance of hanging for extended periods of time.
 * Live preview doesn't work for pinned site tabs.
 * Some Office applications may either crash or go missing if you update to this build.
 * There's a chance of the Settings app crashing if you open Manage Disks and Volumes.
 * There's a chance of randomly encountering a BSOD with the error code  when using certain virtualization technologies.
 * The Linux kernel is not installed when you use the  in the Windows Subsystem for Linux. To workaround this issue, run   to the latest kernel version.
 * Sometimes, when starting up a WSL2 distro, there's a chance of randomly encountering the error “The remote procedure call failed”.
 * The vEthernet adapter used in WSL2 distros can randomly disconnect itself after a certain period of time.
 * You may see generic errors when you install WSL through.