Ransomware update can be find in the following link
1. For Windows XP, Windows Vista, Windows 8, Windows Server 2003, Windows Server 2003 R2 link below:
https://support.microsoft.com/en-us/help/4025687/microsoft-security-advisory-4025685-guidance-for-older-platforms
2. Windows 7, Windows 8.1, Windows 8.1 RT, Windows 10, Windows Server 2008, Windows Server 2008 R2, Windows Server 2016 link below:
https://support.microsoft.com/en-us/help /4025686/microsoft-security-advisory-4025685-guidance-for-supported-platforms