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Starting with Node.js 24, you need ClangCL—not MSVC—to compile the Node.js runtime from source on Windows. This change does not prevent Windows users from running official prebuilt Node.js binaries, and it does not mean Visual Studio is no longer part of the source-build setup.
What changed in Node.js 24?
The Node.js 24.0.0 release announcement, published on May 6, 2025, states: “Starting with Node.js 24, support for MSVC has been removed, and ClangCL is now required to compile Node.js on Windows.” Node.js 24.0.0 release announcement
The change is specifically about the compiler used to build Node.js itself from source on Windows. It does not end Windows support, prohibit installing MSVC alongside Node.js, or require ordinary users to compile Node.js in order to use it.
Who needs to act?
- Building Node.js from source on Windows: update the build environment to include ClangCL and the MSBuild LLVM toolset.
- Running an official prebuilt Node.js binary: the MSVC change alone is not a reason to install a compiler. The change applies to compiling the runtime from source.
How to prepare a Windows source-build environment
The current Node.js build guide lists Visual Studio 2022 or 2026, the Windows 11 SDK, and a 64-bit host for supported Windows toolchains. Toolchain requirements can change, so check the live Node.js BUILDING.md before setting up or troubleshooting a build.
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- Install Visual Studio and select the Desktop development with C++ workload.
- In Visual Studio Installer, open the individual components for that installation and select C++ Clang Compiler for Windows (
Microsoft.VisualStudio.Component.VC.Llvm.Clang). - Also select MSBuild support for LLVM (clang-cl) toolset (
Microsoft.VisualStudio.Component.VC.Llvm.ClangToolset). - Confirm that the Windows 11 SDK is installed, then follow the current build instructions in BUILDING.md for the remaining prerequisites and build steps.
The project currently documents support for compiling with Clang supplied by Visual Studio. Installing Visual Studio without its Clang/LLVM components may leave the toolchain incomplete.
Why might a build say Visual Studio is missing?
A reported Windows build failure shows how a missing ClangCL component can be mistaken for Visual Studio itself being absent. If Visual Studio is installed but the build will not proceed, inspect the installation’s individual components and verify both LLVM entries above before reinstalling the IDE. The report is an example of a diagnostic pitfall; use the official build guide for setup requirements. Node.js issue #61437
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How does this fit into a Node.js 24 upgrade?
The Node.js v22-to-v24 migration guide identifies Node.js 24.11.0 as an LTS release, scheduled to receive updates through the end of April 2028. That schedule is version-specific and can change; consult the live Node.js v22-to-v24 migration guide and current Node.js release information when planning an upgrade.
The migration guide also covers other Node.js 24 changes, including behavioral changes and C/C++ addon migration considerations. Those topics are separate from the MSVC-to-ClangCL requirement for compiling the Node.js runtime.
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Why did Node.js remove MSVC support?
The release announcement and build guide establish that ClangCL is required, but they do not give a reason for removing MSVC support. Claims that the change was driven by performance, compatibility, licensing, or developer preference are not established by those sources.
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