Activation is handled directly within the Visual Studio interface or via mass-deployment for enterprise users. Manual Activation Open Visual Studio. Navigate to the "Try, Buy or Activate a Visual Micro License" Enter your key in the textbox and click [Activate Purchased Key] Automatic/Mass Install
Click on the menu at the top bar (or Tools in older Visual Studio versions). Select vMicro > General > Visual Micro Explorer . Visual Micro License Key
Ensure you didn't accidentally copy an extra space at the beginning or end of the key string. Activation is handled directly within the Visual Studio