Without a valid license key and authorization number, SketchUp 2017 functions in a limited capacity (often essentially as the free "Make" version if available, or with a trial period). Authorized keys unlock:
When a user installed SketchUp 2017, the authorization process followed these steps: Sketchup 2017 License Key And Authorization Number
To authorize SketchUp 2017, a user required two distinct pieces of information: Without a valid license key and authorization number,