Because the .NET Framework is classified as a component of the Windows Operating System, its support phase is directly tied to the underlying OS lifecycle. Microsoft .NET Framework - Microsoft Lifecycle
: Introduced advanced cryptographic options within the System.Security.Cryptography namespace. microsoft .net framework v4.6.2
: Secured foundational communications by enforcing modern digital signatures, outlasting earlier versions (4.5.2, 4.6, and 4.6.1) that relied on the compromised SHA-1 algorithm. Base Class Library (BCL) Updates Because the
: Enhanced support for certificates containing ECDSA (Elliptic Curve Digital Signature Algorithm) keys. outlasting earlier versions (4.5.2
: Improved UI focus and touch-keyboard interactions for hybrid touchscreen Windows devices. 2. Installation and Operating System Compatibility