: Complete the installation and open a new Command Prompt or PowerShell window.

If you encounter the error even after installation, try these steps: Download - Graphviz

: During the setup, you will see a prompt regarding the system PATH. Must Select: "Add Graphviz to the system PATH for current user" (or all users).

If successful, it will return the version number (e.g., dot - graphviz version 14.1.5 ). Troubleshooting Common Issues

Installing Graphviz is straightforward, but one critical step during the process often prevents errors in other software like Python or Doxygen.

: Type the following command to verify it’s working: dot -V Use code with caution.

Download and Install Graphviz for Windows: A Complete Guide The most reliable way to get on Windows is to download the official executable installer directly from the Graphviz Download Page . As of May 2026, the current stable release is v14.1.5 , which is built with Microsoft Visual Studio 2019 for high compatibility with modern Windows 10 and 11 systems. Quick Download Links (Stable v14.1.5) 64-bit EXE Installer : Recommended for most modern PCs.