September 21, 2020

Microsoft releases Windows 10 v1809 KB4577069 preview to fix known issues

1 min read

Windows 10 v1809 received KB4577069 (OS Build 17763.1490) Preview, which is used to fix some known issues and enhance stability.

This type of update is a beta version update only if the user manually clicks to check the update will be received, based on stability considerations, users are not recommended to download and install the beta version update.

Windows 10 mapped network drive

This update is only applicable to Windows 10 v1809. After successfully installing this update, the system version is upgraded to Windows 10 Build 17763.1490.

Based on stability considerations, it is not recommended for ordinary users to download and install the update. Interested enterprise IT administrators can download and install it on test machines for evaluation.


  • Adds a notification to Internet Explorer 11 that informs users about the end of support for Adobe Flash in December 2020. For more information, see KB4581051.
  • Updates an issue to reduce the likelihood of missing fonts.
  • Updates an issue that causes applications to close unexpectedly when a user inputs East Asian characters after changing the keyboard layout.
  • Updates an issue that causes Microsoft Office applications to close unexpectedly when using a Korean Input Method Editor (IME).