Back in 2016, SketchUp Pro operated on a "Classic License" system. Unlike today’s sign-in method via a Trimble ID, the 2016 version required two specific strings of characters to activate:
The root cause appears to be server-side changes at Trimble. As of 2023, the Classic License authorization servers for versions 2016 and 2017 are no longer actively maintained. While SketchUp staff partially fixed the 2017 add-license functionality in April 2023, users report that 2016 remains problematic. sketchup 2016 license key and authorization code
Look for emails from @sketchup.com or authorized regional distributors. 2. Locate License Files on an Older Computer Back in 2016, SketchUp Pro operated on a
To understand the context of SketchUp 2016 licensing, it's crucial to know that on November 4, 2020, Trimble officially stopped selling new Classic (perpetual) licenses. Classic Licenses allowed users to purchase a specific version outright and use it indefinitely. Since then, Trimble has transitioned entirely to a subscription model for new purchases, which is tied to a Trimble ID rather than a license key. While SketchUp staff partially fixed the 2017 add-license