Windows 64-bit

Use this guide to create your first High Fidelity build for Windows 64-bit.


This guide will help you create your first High Fidelity build if you’re using a system with Windows 64 bit.


Hardware Requirements

To successfully build High Fidelity, check out the system requirements.

Software Requirements

We are now using Visual Studio 2017 and Qt 5.9.1. If you are upgrading from Visual Studio 2013 and Qt 5.6.2, do a clean uninstall of those versions before going through this guide.

The prerequisites will require about 10 GB of space on your drive.

To create your High Fidelity build you’ll need to download and install:

1. Visual Studio 2017

If you don’t have Community or Professional edition of Visual Studio 2017, download Visual Studio Community 2017.

When selecting components, check "Desktop development with C++." Also check "Windows 8.1 SDK and UCRT SDK" and "VC++ 2015.3 v140 toolset (x86,x64)" on the Summary toolbar on the right. In the end, your screen should look like this:


2. CMake

Download and install the latest version of CMake 3.9. Download the file named win64-x64 Installer from the CMake Website. Make sure to check "Add CMake to system PATH for all users" when prompted during installation.

3. Qt

Download and install the Qt Online Installer. While installing, deselect components so that your window looks like this:


Note: Installing the Sources is optional but recommended if you have room for them (~2GB).

The next thing you need to do is set the Qt environment variables. Go to "Control Panel > System > Advanced System Settings > Environment Variables > New..." (or search “Environment Variables” in Start Search). Then, setup your Qt variables.

  • Set "Variable name": QT_CMAKE_PREFIX_PATH
  • Set "Variable value": C:\Qt\5.9.1\msvc2017_64\lib\cmake

4. vcpkg

Download and unzip the VCPKG repository into C:/src/.

Follow the instructions in the readme to bootstrap vcpkg using a Developer Command Prompt.

Set an environment variable VCPKG_ROOT to the location of the cloned repository. Go to "Control Panel > System > Advanced System Settings > Environment Variables > New..." (or search “Environment Variables” in Start Search). Then, setup your vcpkg variables:

  • Set "Variable name": VCPKG_ROOT
  • Set "Variable value": C:\src\vcpkg

Close and re-open any command prompts after setting the environment variable so that they will pick up the change.

5. OpenSSL

Using a Developer Command Prompt, run the following command in your %VCPKG% directory: vcpkg install openssl:x64-windows


1. Run CMake to Generate Build Files

Run Command Prompt from Start and run the following commands:

    cd "%HIFI_DIR%"
    mkdir build
    cd build 
    cmake .. -G "Visual Studio 15 Win64"

%HIFI_DIR% is the directory for the highfidelity repository.

2. Make a Build

Follow these steps to make your build:

  • Open %HIFI_DIR%\build\hifi.sln using Visual Studio.
  • For best performance, change the Solution Configuration (next to the green play button) from Debug to Release for best performance.
  • Lastly, go to Run Build > Build Solution.
3. Test the Interface

Create another environment variable (Just like how you created the Qt-variable).

  • Set Variable name: _NO_DEBUG_HEAP
  • Set Variable value: 1

In Visual Studio, go to the Apps folder in the Solution Explorer. Right-click interface and select Set as Startup Project. Then, you can navigate to Run Debug > Start Debugging.

Now, you should have a full build of High Fidelity and be able to run the Interface using Visual Studio. Please check our documentation for more information regarding the programming workflow.

You can also run Interface by launching it from command line or File Explorer from %HIFI_DIR%\build\interface\Release\interface.exe


If you face any problems once you start trying to generate build files using CMake, there are couple of things you could try to solve any issues.

  • Delete your locally cloned copy of the highfidelity repository.
  • Restart your computer.
  • Download the repository again.
  • Try to generate build files using Cmake. If this is successful, continue with the rest of the steps.
Common Errors and their Solutions
  • If CMake gives you the same error message repeatedly after the build fails, try to remove CMakeCache.txt found in the %HIFI_DIR%\build' directory.
  • If Qt is throwing an error, make sure you have the correct version (5.9.1) installed and the 'QT_CMAKE_PREFIX_PATH' environment variable is set correctly.
  • If the application builds but does not start up, make sure that the root Qt directory is NOT in your PATH environment variable.