Windows 10 build 20215

10.0.20215.1000.rs_prerelease.200911-1500

Build of Iron
OS family	Windows 10 (NT 10.0)
Version number	10.0
Build number	20215
Build revision	1000
Architecture	x86, x64, ARM64
Build lab	rs_prerelease
Compiled on	2020-09-11
Expiration date
Timebomb	2021-01-31 (+142 days)
SKUs
Home (N, Single Language, China) Pro (N, Single Language, China) Pro Education (N) Pro for Workstations (N) Education (N) Enterprise (G, N) Enterprise Evaluation (N) Enterprise multi-session IoT Enterprise Team
Product key
Use a Windows 10 Retail serial
About dialog

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 KMODE_EXCEPTION when using certain virtualization technologies.
• The Linux kernel is not installed when you use the wsl --install in the Windows Subsystem for Linux. To workaround this issue, run wsl --update 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 wsl --install.

Gallery

• 

  Dark theme search experience

External links

• Official announcement