Click the button in the top right corner of the dialog.

While it’s tempting to ignore the "Trial" banner, an unactivated version of Visual Studio 2013 will eventually lock you out of your projects. Entering your key early ensures that your environment remains stable and that you have access to all features, including advanced debugging and profiling tools available in the higher-tier editions.

Method 1: Entering the Product Key via the IDE (Recommended)

This is the standard way to license your software. Ensure you are running Visual Studio with to ensure the registry can be updated with the license info.

Once the IDE is open, look at the top menu bar and click on Help .