VSPackage Load Keys
[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]
To prevent unauthenticated VSPackages from running in Visual Studio, each VSPackage to be loaded in a deployed application must have a valid package load key (PLK).
The Visual Studio SDK provides a developer load key (DLK) that makes it possible for VSPackages to load without a PLK during development.