Releasing Windows 10 Insider Preview Build 19041.84 to the Slow ring


Hello Windows Insiders, today we’re releasing 20H1 Build 19041.84 (KB4539080) to Windows Insiders in the Slow ring. This Cumulative Update includes quality improvements. Key changes include:


  • Security updates to Microsoft Edge, Internet Explorer, Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Input and Composition, Windows Media, Windows Shell, the Microsoft Scripting Engine, Windows Fundamentals, Windows Management, Windows Virtualization, Windows Peripherals, Windows Network Security and Containers, Windows Storage and Filesystems, and Windows Server.
  • We have fixed an issue where in certain cases, after Windows runs a scheduled task during a maintenance window, a PC may get into an unbootable state after installing Build 19041.21 (KB4535550).

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues

  • We are aware Narrator and NVDA users that seek the latest release of Microsoft Edge based on Chromium may experience some difficulty when navigating and reading certain web content. Narrator, NVDA and the Edge teams are aware of these issues. Users of legacy Microsoft Edge will not be affected. NVAccess has released a NVDA 2019.3 that resolves the known issue with Edge.

More info at Windows Blog

2 Replies
There is a problem with this release. Unable to download the upgrade. Fails with download error 0xc1900404. This has been confirmed by several users on reddit: Current OS Build: Windows 10 Pro 18362.657
18362.657 and then 2004? they're not the same...
the former is stable Windows 10 version, the latter is insider version.