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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 Bui...

Try the latest updates to MSVC Build Tools Preview

Visual Studio 2026 versions 18.1 through 18.6 deliver a wave of improvements for C++ developers. For MSVC Build Tools, the v14.51 release is now generally available with runtime performance gains and improved C++23 conformance. We also introduced Sample Profile Guided Optimization to help you improve the runtime performance of your C/C++ programs. ...

Profile Guided Optimization (PGO) has long been one of the most powerful tools in the MSVC compiler's arsenal for improving the runtime performance of C and C++ applications. By using execution profile data collected from representative workloads, PGO enables the compiler to make smarter decisions about inlining, code layout, and hot/cold code sepa...

MSVC Build Tools v14.51 GA available in Visual Studio 2026 18.6

Try out the final preview of MSVC Build Tools v14.51

We’re pleased to provide an update on C++23 support in the Microsoft C++ (MSVC) Build Tools. This blog post will cover the feature additions in MSVC Build Tools version 14.51, including C++23 language features, libraries, and ISO C++ Core Working Group (CWG) and Library Working Group (LWG) Issue resolutions. We’ll also discuss the plans for complet...