Net Framework 45 Developer Pack Link [upd]

Open the "Visual Studio Installer" app, click Modify , and check the Individual Components tab. You can often toggle older versions here.

You need the Developer Pack (also known as the Targeting Pack) to see .NET 4.5 as an option in your Visual Studio project settings. Without it, you can run apps, but you can’t compile them for that specific version. 💡 Quick Troubleshooting Tips net framework 45 developer pack link

If your project file ( csproj ) shows <TargetFrameworkVersion>v4.5</TargetFrameworkVersion> , installing the usually satisfies the requirement because the reference assemblies are forward-compatible within the 4.5.x family. Open the "Visual Studio Installer" app, click Modify

Supported scenarios

If you open an older project in Visual Studio and see an error stating "The target framework '.NETFramework,Version=v4.5' was not found," it means you are missing this pack. Without it, you cannot: Compile code targeting .NET 4.5. Without it, you can run apps, but you

– Note: This is the redistributable runtime for end-users, not the full developer pack. What is Included in the Developer Pack?

Provides the hover-over documentation and code completion hints you see while typing in Visual Studio.