Win10 dev preview 20215 officially released (with fix known problems)


As we all know, Microsoft released windows 10 insider preview build 20215 on dev development channel for internal testing. It house learned that the new update not only brings support for the dark theme in windows search, but also brings a lot of repairs and improvements. Don’t miss it if you are interested.

For insiders that set the windows 10 system theme to dark, Microsoft will introduce dark theme search results for the windows 10 search experience on the taskbar. This server-side change is being rolled out to all windows insiders in the dev channel. This change will make the transition between visual “start” and search results easier, and both now support dark themes.


Fixed a problem that might cause windows security apps to hang.

Fixed a problem that may cause windows security applications to crash when navigating to the exclusion page when there are a large number of exclusions.

Fixed a problem where a system restore using a restore point created before the Microsoft edge update might cause Microsoft edge to fail to start after the restore is complete.

Fixed a problem where the text cursor accidentally moved to the beginning of the text field when typing with Korean ime in some applications.

Fixed a problem affecting the reliability of voice input.

Fixed the problem that the “start” menu could not reflect the cancellation of the planned restart when the update was waiting for restart on a small number of devices.

Known problems

Microsoft is studying reports that the update process has been suspended for a long time when trying to install a new build version.

Microsoft is working to fix it to enable real-time preview of fixed website tags.

Microsoft is trying to enable a new taskbar experience for existing fixed websites. At the same time, you can unpin the website from the taskbar and remove it from the edge://apps Remove from the page, and then re pin the site.

Microsoft is investigating reports that some office applications crashed or lost after updating to the new version.

Microsoft is fixing the problem that caused some internal users to crash “Settings” when opening “manage disks and volumes”.

Microsoft is investigating that some devices encounter kmode when using some virtualization technologies_ Exception error check report.

Microsoft is trying to fix the problem that the Linux kernel cannot be installed when using the ‘WSL – install’ command in the windows subsystem. To fix this immediately, run ‘WSL – Update’ to get the latest kernel version.

Microsoft is investigating the issue affecting the windows subsystem for Linux 2 distribution. Users may receive error messages on this issue“ Remote procedure call failed ”.

Microsoft is investigating a bug that the V Ethernet adapter in the windows subsystem for Linux 2 distribution will be disconnected after a period of use.

Microsoft is trying to fix the problem of seeing common errors when using ‘WSL – install’ in Windows subsystem for Linux.

Windows insiders can go to Settings > updates and Security > windows update, then click Check for updates to download and install a new version of insider.

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