SketchUp has moved entirely to a subscription model for newer versions. If you cannot recover your 2017 codes, you may need to upgrade to a modern plan like SketchUp Go or Pro . Classic License Errors - SketchUp Help
: SketchUp 2017 is no longer officially supported by Trimble. Services like the 3D Warehouse and Extension Warehouse are no longer compatible with this version. Serial number and authorization code sketchup pro 2017
: If the software is already active on another machine, go to Help > License > License Info (Windows) or SketchUp > License (Mac) to view and copy your serial number. Use the License Manager SketchUp has moved entirely to a subscription model
If you previously purchased a license for the 2017 version, your credentials should be in the original confirmation email. Search Your Inbox : Look for messages from sketchupmail@sketchup.com Check Existing Installations Services like the 3D Warehouse and Extension Warehouse