For users of SketchUp 2017 , licensing works differently than modern subscription-based versions. SketchUp 2017 uses a , which consists of a Serial Number and an Authorization Code. Finding Your License Details
If you still have SketchUp 2017 installed on an old computer, go to Help > License > License Info (Windows) or SketchUp > License > License Info (Mac) to view and copy your serial number. Authorization Process Sketchup 2017 License Key And Authorization Number
Patched versions of the software frequently crash due to file corruption in the licensing DLLs. This results in lost work and corrupted model files. Classic License For users of SketchUp 2017 ,