KB4471323

Addresses time zone changes for Russian daylight standard time.

Addresses time zone changes for Moroccan daylight standard time.

Addresses an issue that causes the installation and client activation of Windows Server 2019 and 1809 LTSC Key Management Service (KMS) host keys (CSVLK) to not work as expected. For more information about the original feature, see KB4347075. 

Addresses an issue that may prevent the use of the Seek Bar in Windows Media Player when playing specific files. This issue does not affect normal playback.

Security updates to Microsoft Scripting Engine, Internet Explorer, Windows App Platform and Frameworks, Microsoft Graphics Component, Microsoft Edge, Windows Storage and Filesystems, Windows Authentication, Windows Wireless Networking, and Windows Kernel.