Available via Windows Update.
Source: https://support.microsoft.com/en-us/help/24717/windows-8-1-windows-server-2012-r2-update-history
December 13, 2016—KB3205401 (Monthly Rollup)
This security update includes improvements and fixes that were a part of update KB3197875 (released November 15, 2016), and also resolves the following vulnerabilities in Windows:
- Security updates to the common log file system driver, Windows OS, kernel-mode driver, Microsoft Uniscribe, Internet Explorer, and the Microsoft Graphics Component.
For a complete list of affected files, see KB3205401.
Download: https://www.catalog.update.microsoft.com/Search.aspx?q=3205401
December 13, 2016—KB3205400 (Security-only update)
This update includes only security fixes. No new operating system features are being introduced in this update. Key changes include:
- Security updates to the common log file system driver, Windows OS, kernel-mode driver, Microsoft Uniscribe, Internet Explorer, and the Microsoft Graphics Component.
For a complete list of affected files, see KB3205400.
Download: https://www.catalog.update.microsoft.com/Search.aspx?q=3205400
Source: https://support.microsoft.com/en-us/help/24717/windows-8-1-windows-server-2012-r2-update-history