Microsoft is tightening the screws on Windows 10 users running the Long Term Servicing Channel version. They will be cut from 10 years to five the length of time it will support the Windows 10 Enterprise LTSC releases. Users running Windows 10 Enterprise LTSC 2015, 2016 or 2019 are not affected. They are also guiding those who need 10 years of support for a Windows release to go with Windows 10 IoT Enterprise LTSC, which will get a full decade of support.