If you're unable to find your serial number or authorization code, the best course of action is to contact Trimble's customer support. They can guide you through the process of retrieving your license information.
Even if you have a valid serial number, you might encounter hurdles: sketchup 2014 serial number and authorization code
Online tools claiming to generate “valid SketchUp 2014 authorization codes” are fraudulent. SketchUp’s offline activation uses a cryptographic algorithm that ties the authorization code to your specific serial number and computer hardware ID. No brute-force generator can produce valid codes except by accident – and those “accidents” are almost always non-working numbers. If you're unable to find your serial number
However, one question persistently appears in forums and comment sections: “Where can I find a SketchUp 2014 serial number and authorization code?” sketchup 2014 serial number and authorization code