March 14, 2017—KB4012214 (Security-only update)

This update includes only security updates. Key changes include:

Security updates to Microsoft XML Core Services, Microsoft Graphics Component, Microsoft Windows PDF Library, Windows kernel-mode drivers, Microsoft Uniscribe, Windows kernel, Windows SMB Server, Internet Information Services, Active Directory Federation Services, Windows Hyper-V, and the Windows OS.

For a complete list of affected files, see KB4012214.