_You are legally required to dump your games from your Nintendo Switch. To do so, please follow our in-depth [Quickstart Guide](https://yuzu-emu.org/help/quickstart/)._
_yuzu requires console keys for the decryption and usage of your games. Please follow our [Quickstart Guide](https://yuzu-emu.org/help/quickstart/) to dump these keys and system files from your Nintendo Switch._
### **yuzu starts with the error "Unable to start application: Os { code: 2, kind: NotFound, message: “The system cannot find the file specified.” }"**
_This problem is usually caused by a false positive of your antivirus software, most commonly by Avast and AVG. These applications will often incorrectly detect yuzu as malicious software and delete the executable as a result._
_Afterwards, follow the instructions below for `yuzu will not update further or starts with a Qt platform error` to delete any residual files of the failed installation._
* _Select the `yuzu` folder and delete it. If it is being used by another process, please double-check that you do not have any yuzu related applications running._
_You are likely experiencing Shader Caching. Shaders are small programs running on a graphic card, responsible for rendering graphics like terrain, explosions, characters, etc. Since a PC cannot directly execute switch shaders, It first has to translate them to a format a PC can understand. This translation process is time-consuming and you'll notice it in two ways:_
* _While playing, if yuzu needs to translate a new shader, the game will stutter. Loading into a game for the first time can give long freezes due to the number of shaders. As you keep playing, the amount of stuttering will decrease._
* _When launching a game, the shader cache is loaded. To speed up this process there exists an additional "precompiled" cache. This cache may get reset every time you update yuzu or install a new GPU driver. The precompiled cache will then be compiled from scratch, causing a longer load time._
_Currently, the Vulkan renderer does not have a disk shader cache. This means that subsequent game loads will require the building of shaders each time._
_For a list of useful mods for your favorite games, check our database with [Switch Mods](https://yuzu-emu.org/wiki/switch-mods/)_
_To add mods to a specific game, simply right click the game in yuzu's games list, select `Open Mod Data Location` and structure your mod files similar to this example:_
_The mods provided on our [Switch Mods](https://yuzu-emu.org/wiki/switch-mods/) page are already structured accordingly and only need to be extracted into the mod directory folder as is._
_Once added to the correct mod directory, simply right click the game again, select properties and activate the installed mod. The same process can be followed in reverse for de-activating mods_
_Afterwards, go to `Settings > System > Filesystem tab` and click on `Reset Metadata Cache` on the bottom. This will refresh the games list addons column._
_It is written in C++ with portability in mind, with builds actively maintained for Windows, Linux and macOS. The emulator currently can play various commercial titles and homebrew applications with varying degrees of success._
_yuzu is actively tested and supported on various 64-bit versions of Windows (7 and up) and Linux. macOS is no longer supported due to Apple deprecating OpenGL._
_yuzu currently requires an OpenGL 4.5 capable GPU and a CPU that has high single-core performance. It also requires a minimum of 8 GB of RAM. For more details, see our [Quickstart Guide](https://yuzu-emu.org/help/quickstart/#hardware)._
_yuzu has an active team of open-source developers. The list of contributors can be [found on GitHub](https://github.com/yuzu-emu/yuzu/graphs/contributors)._
