When you open an existing CMake cache, Visual Studio will not attempt to manage your cache and build tree for you. This gives your custom or preferred tools complete control over how CMake configures your project. You can open an existing cache in Visual Studio via **File > Open > CMake** and navigating to an existing CMakeCache.txt. Alternatively, if you have already opened the project in Visual Studio, you can add an existing cache to it the same way you would add a new configuration. For more information, see our blog post on [opening an existing cache in Visual Studio](https://devblogs.microsoft.com/cppblog/open-existing-cmake-caches-in-visual-studio/).