The delay of the Microsoft February security updates to the March Update Tuesday (March 14, 2017) resulted in those operating systems having the built in Flash Player not getting the latest security update.
Rather than hold the Flash Player update to March, Version 24.0.0.221 of Adobe Flash Player has been released for Windows Server 2012, Windows 8.1, Windows Server 2012 R2, Windows RT 8.1 and Windows 10.
References
Rather than hold the Flash Player update to March, Version 24.0.0.221 of Adobe Flash Player has been released for Windows Server 2012, Windows 8.1, Windows Server 2012 R2, Windows RT 8.1 and Windows 10.
References