Very little in practice. The (a smaller download) contains only the reference assemblies and tools for building. The Developer Pack includes the Targeting Pack plus the runtime for testing. For most developers, the Developer Pack is the right choice.
The Developer Pack is a single installer that provides several critical components for software development: .NET Framework 4.5 Runtime: The core execution engine needed to run .NET apps. Multi-Targeting Pack: Includes the reference assemblies microsoft .net framework 4.5 developer pack download
.NET Framework 4.5 is an in-place update to .NET 4.0. Installing it will replace existing 4.0 runtime files. Very little in practice
If you are a developer encountering errors like "Target framework is not installed" or need to build applications specifically for Windows 8, Windows Server 2012, or older CI/CD pipelines, you are likely searching for the . For most developers, the Developer Pack is the right choice
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