Microsoft releases new Windows 10 Insider builds for the Dev and Beta channels

Laurent Giret

Windows Insider Program sign

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Microsoft has just released new Windows 10 preview builds for Insiders in the Dev and Beta channel. The build 20201 for the Dev channel only includes some minor fixes as well as additional known issues that Microsoft is now investigating from the last flight.

You can find all details about bug fixes and known issues in the build 20201 below:


  • We’ve fixed an issue where some Microsoft Store games protected by Easy Anti-Cheat failed to launch. Some games may still need to release an update to fully resolve the issue.
  • We fixed an issue where the IME mode indicator in the taskbar was indicating that the IME was enabled when it was actually in disabled state.
  • We fixed an issue in the last few flights resulting in HDR monitors appearing black when HDR was enabled.
  • We fixed an issue where the min/max/close buttons were stuck in their original positions after resizing a UWP app.
  • We fixed an issue where SetInputScope wasn’t working if it was called after the app had been initialized.

Known issues

  • We’re looking into reports of the update process hanging for extended periods of time when attempting to install a new build.
  • We’re investigating reports that the new taskbar experience for pinned sites isn’t working for some sites.
  • We’re working on a fix to enable live preview for pinned site tabs.
  • We’re working on enabling the new taskbar experience for existing pinned sites. In the meantime, you can unpin the site from the taskbar, remove it from the edge://apps page, and then re-pin the site.
  • We’re working on a fix for an issue where pinned sites don’t show all open tabs for a domain. In the meantime, you can fix this by pinning the site’s homepage rather than a specific page (e.g. pin rather than
  • We’re working on a fix to resolve syncing issues in the Mail app with certain mail services.
  • We’re working on a fix for an issue where Office documents may open blank when opened from File Explorer. If you encounter this issue on this build or Build 20197, the file should render correctly if opened from within the app rather than File Explorer.
  • We’re investigating reports of some Office applications crashing or missing after updating to a new build.
  • We’re investigating reports of some devices receiving a bugcheck with error code KERNEL_MODE_HEAP_CORRUPTION.
  • We’re investigating reports of the Settings app crashing when opening Manage Disks and Volumes.

For Windows Insiders in the Beta channel, the 20H2 build 19042.487 (KB4571744) is now available and you can find the long list of fixes on the blog post. Windows 10 20H2 will be a minor update for the May 2020 Update (20H1), and Microsoft is already offering it to commercial customers in the Beta Channel and Release Preview Channel for pre-release validation ahead of its public release.

You may also have noticed that the Windows Insider blog received a fresh coat of paint today. The design refresh has also been applied to other Windows blogs, and please let us know in the comments if you like this new visual identity.