NET Framework 4 installed, the version 4 assemblies are replaced with newer versions.

NET Framework 4.5 or later versions on a system that has. NET Framework 4.5 and later versions are built incrementally on. NET Framework 4.5, which means they use the same runtime version, but the assembly versions are updated and include new types and members. NET Framework 4.8 are in-place updates to. NET 4.5.2, 4.6, and 4.6.1 lifecycle update blog post, and the FAQ. For more information, see the SHA1 retirement plan, the. NET Framework 3.5 SP1, and 4.6.2 through 4.8. Updated SHA2 signed installers will be available for. NET Framework 4.6.2, before Apin order to continue to receive updates and technical support. NET Framework 4.5.2, 4.6, or 4.6.1, update your deployed runtime to a more recent version, such as. After this date, security fixes, updates, and technical support for these versions will no longer be provided. NET Framework content previously digitally signed using certificates that use the SHA1 algorithm, will be retired in order to support evolving industry standards.

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