June 21, 2018—KB4284852 (Preview of Monthly Rollup)

Applies to: Windows Server 2012Windows Embedded 8 Standard

Improvements and fixes


This non-security update includes improvements and fixes that were a part of KB4284855 (released June 12, 2018) and also includes these new quality improvements as a preview of the next Monthly Rollup update:

  • Addresses an issue in which SmartHeap didn't work with UCRT.
  • Addresses an issue in which the Universal CRT cannot output Japanese characters by using the putwchar function and std::cout/std::wcout objects.

Known issues in this update


Microsoft is not currently aware of any issues with this update.

How to get this update


This is provided as an Optional update on Windows Update. For more information about how to run Windows Update, see How to get an update through Windows Update. To get the standalone package for this update, go to the Microsoft Update Catalog website.

File information

For a list of the files that are provided in this update, download the file information for update 4284852