MSVC Build Tools Preview updates – September 2026

This article discusses the latest updates to the MSVC Build Tools Preview, including new features and fixes targeting the v14.52 release. It highlights improvements in diagnostics, compiler behavior, and more.

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The MSVC Build Tools Preview is updated regularly with the latest features and fixes from the MSVC development team. This post covers updates from the past month, currently targeting the v14.52 release. This encompasses changes across the compiler frontend, backend, linker, standard library, and related tools.

Although you can acquire the MSVC Build Tools Preview through either the Visual Studio 2026 Stable Channel or Insiders Channel , Insiders gets MSVC Preview updates more quickly (roughly weekly).

To check whether it is installed, make sure one or both of these components are selected in the Visual Studio Installer:

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