

Note that the majority of these tools cannot be used unless you are within a mission in the game. Once activated, you will have access to the Developer Tools from a toolbar across the top of the screen.


You can activate developer mode from the General options in the game: To create add-on packages correctly you will need to use this SDK in conjunction with Developer Mode from within the Microsoft Flight Simulator game. For the full contents of the SDK, please see the SDK Contents page. NOTE: After reading this overview, please read the page on Using The SDK, as it includes important information on how the contents of the SDK should be used. A package is essentially a collection of files that make up the add-on content being shared, and this can be anything from a custom aircraft to a new airport, or even a combination of multiple different game assets! Microsoft Flight Simulator supports the development of add-ons that can distributed to other users in the form of packages. If you have an issue while creating a package then uninstalling and reinstalling the SDK (or installing a previous version of the SDK) will have no effect, as the issue will be with the package itself, and as such you will need to fix the contents of the package (whether that be fixing a GLTF file, or updating some WASM code, etc.). IMPORTANT! The SDK is completely independent from the Microsoft Flight Simulator executable, and is simply a collection of tools and resources that can be used to create content for add-on packages.
