Because .NET Framework 4.x updates are "in-place," installing a newer runtime (like .NET 4.8) sometimes blocks older runtime installers. However, you can still install older targeting packs . Ensure you are downloading the , not the standalone runtime installer. 2. Missing in Modern Visual Studio (2022 and Newer)

Unlike a standard "runtime" (which only lets you run apps), the Developer Pack includes the following:

Ensure you downloaded the Developer Pack / Targeting Pack , not the standalone Runtime installer. The Targeting Pack can safely coexist alongside newer system runtimes. 2. Framework Missing from Visual Studio Dropdown

Includes the actual .NET Framework 4.5 binaries required to run and test the application on your machine.

A: You likely need to enable ".NET Framework 4.5 targeting" in the Visual Studio Installer rather than downloading a separate pack. However, installing the pack ensures the files are present.

The is a specialized package designed for developers. Unlike the Runtime (which is meant for end-users to run applications), the Developer Pack installs the following components:

Click the official Microsoft link above to download the .exe file (usually named NDP452-DevPack-KB2901951-Web.exe or similar).

This is a crucial area, as support has changed in newer versions of Visual Studio.

This method is highly reliable because the package is published by Microsoft itself. As of August 2022, this package has been downloaded over 14 million times.

for cross-platform support, significantly better performance, and access to modern language features

You must download and install the developer pack independently via the standalone Microsoft download links provided above. Once installed externally, Visual Studio 2022 will recognize the reference assemblies and allow you to build the project. 3. Build Server Failures (MSBuild)