Report ID: DEV-2024-IC-01 Subject: Sourcing and validation of Microsoft Visual C++ 14.0 toolchain Date: Current Author: Technical Advisory 1. Executive Summary Visual C++ 14.0 (MSVC 2015) is a compiler toolchain required to build Python native extensions, Node.js native addons, and various C++ projects that specify vc14 as the toolset. Contrary to common misconception, no standalone "Visual C++ 14.0" download exists from Microsoft. The compiler is obtained through Visual Studio 2015, Visual Studio 2017, 2019, or 2022 (with backward compatibility), or via Build Tools. 2. Background: Version Mapping Microsoft’s MSVC versioning can be confusing. The following table clarifies the relationship: