Installing OR-Tools for .Net from Binary on Windows

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This guide explains how to install OR-Tools for .Net on Windows.

Although these instructions might also work on other Windows variants, we have only tested them on machines meeting the following requirements: Windows 10 64-bit (x86_64) with:

  • Microsoft Visual Studio [Community] 2022
  • Microsoft Visual Studio [Community] 2019


The following sections describe the prerequisites for installing OR-Tools.

Microsoft Visual C++ Redistributable

You must have the Microsoft Visual C++ Redistributable for Visual Studio 2019 (select the x64 version) installed on your computer, since OR-Tools library for .Net is a wrapper for the C++ native library.

.NET Core 3.1 SDK

You must install the package .NET Core 3.1 SDK version 3.1.100 or higher from the following location: sdk-3.1.425-windows-x64-installer

.Net 6.0 SDK

You must install the package .NET 6.0 SDK from the following location: sdk-6.0.403-windows-x64-installer

Installing OR-Tools

Take the following steps to install the OR-Tools library for .Net:

Download and extract the binary distribution for your system:

Validate your installation

To test your .Net installations, open a x64 Native Tools Command Prompt and navigate to the directory where you unpacked the binary distribution. Then enter the following command:

tools\make test

This runs a selection of examples for OR-Tools. If all the examples run successfully, you are ready to get started with OR-Tools.