May 23, 2019—KB4499184 (Preview of Monthly Rollup)

This non-security update includes improvements and fixes that were a part of KB4499149 (released May 14, 2019) and also includes these new quality improvements as a preview of the next Monthly Rollup update:

• Addresses an issue to set the date separator properly in the Japanese short date format. For more information, see KB4469068. 
• Updates time zone information for Morocco. 
• Updates time zone information for the Palestinian Authority. 
• Improves performance related to case-insensitive string comparison functions such as _stricmp() in the Universal C Runtime. 
• Addresses an issue that may cause event 7600 in the Domain Name System (DNS) server event log to contain an unreadable server name.
• Addresses an issue that causes applications built with the Universal CRT (UCRT) to receive the missing export message, “__C_specific_handler_noexcept”.
• Addresses a rare issue that prevents fmod() from returning “-0” when expected. 

Before installing this update

Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup. 

If you are using Windows Update, the latest SSU (KB4493730) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog. 

Install 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 4499184.