If you still have the software installed on an old machine, you can view the serial number by going to Help > License > License Info (Windows) or SketchUp > License (Mac).
This was the free version. It does not require a serial number or authorization code. If it’s asking for one, you likely accidentally downloaded the "Pro" trial. sketchup 2017 serial number and authorization code
SketchUp 2017 is no longer officially supported by Trimble. While existing installations may continue to work, official download links are generally no longer provided, and security updates have ceased. Activation Issues: If you still have the software installed on
If you encounter issues with your serial number and authorization code, here are some common problems and solutions: sketchup 2017 serial number and authorization code