The Windows Update center has published the March package of cumulative updates, which will be available for all Windows 10 versions supported by Microsoft. These packages contain fixes for various bugs and issues, as well as updates for the security features.
All users of Windows 10 Update (1809) dated October 2018 have been sent the package indexed KB4489899 (OS build 17763.379). It introduces the significant changes listed below:
Please note that after installing this update, there may be problems with authorization in Internet Explorer 11 when several users with one account are connected via RDP. Computers with several audio devices may face failures of applications that offer advanced options for audio configuration (such as Realtek HD Audio Manager, Windows Media Player or Sound Blaster Control Panel). In MSXML6, there have been noticed problems that lead to the shutdown of some applications, including the group policy editor. You can get acquainted with the suggested workaround solutions on the support website of Microsoft.
In the case of Windows 10 Update (1803) dated April 2018, the package was assigned the index KB4489868 (OS build 17134.648). Its list of changes differs slightly from the one presented above, and only the MSXML6 bug is mentioned in the list of known issues.