If you lost your key, you must contact the retailer where you bought it or Nikon Support, provided you registered the software.

: For downloads from the Nikon Download Center or authorized retailers like B&H Photo or Adorama , the key is sent via a confirmation email or stored in your online account under "Digital Downloads".

Product keys for installed software can sometimes be retrieved using trusted third-party product key finder tools.

If you purchased a download version from the Nikon Store or an authorized retailer, the activation key is sent to your email immediately.