Error "Microsoft Visual C++ 14.0 is required (Unable to find vcvarsall.bat)"

python

pip-installation

visual-c-build-tools

troubleshooting

byAlex Kataev·Jan 14, 2025

If "Microsoft Visual C++ 14.0 required" pops up, get Visual C++ Build Tools pronto. Download the installer ("Build Tools for Visual Studio") from the official site and include the "C++ build tools" during setup to install the elusive vcvarsall.bat.

Here are the steps:

Go to Visual Studio downloads
Retrieve "Build Tools for Visual Studio"
During installation, mark "C++ build tools" and necessary SDKs.

This arms your system with Visual C++ components vital for Python C extension compilation.

Deal with lingering issues

If troubles persist post-Visual C++ Build Tools install, try these troubleshooting steps:

Upgrade setuptools: What's old doesn't always turn gold! Run pip install --upgrade setuptools to update your setuptools package.
Environment Variables: The paths crossing in your system PATH must include directories where C++ Build Tools are. A wandering path can lead to vcvarsall.bat loss.
Alternate installations: When all else fails, head for the hills, or rather, the Unofficial Windows Binaries for Python Extension Packages. These precompiled binaries might offer an escape route around Visual C++.

Alternative options and pointers

While installing Visual C++ Build Tools is commonly the go-to fix, there's more than one way to skin a cat—or address related issues.

Binary packages encourage laziness: Whenever you can, go for binary packages using pip install --only-binary :all: <package-name>. Stay away from compiling from source—it's a rabbit hole you don't want to go down.
Minimal installation can be a life-saver: Save precious hard drive real estate by picking a minimal installation of VC++ components during Visual Studio setup.
Python compatibility: Unsurprisingly, mixing Python 2 and Python 3 is a recipe for disaster—or just plain frustration. Always check tool compatibility with your Python version and system architecture (x86 or x64).

Prep for the big build

Setting up your environment just right minimizes Visual C++ Build Tools related woes.

Python in Visual Studio: During Visual Studio/Build Tools setup, opt for Python development tools as well, because you can never be too prepared.
Precompiled binaries are your friend: Packages like Scrapy or numpy can test your build mettle. For these, consider Unofficial Windows Binaries as your secret weapon.
Stay current: Are you still using an outdated pip or wheel package? Stay in the loop with the latest versions for maximum compatibility and fewer headaches.