A separate code that "unlocks" the license key for use on a specific machine.

If you have already used your license on the maximum number of allowed devices (usually two), you must Remove License from an old machine before you can authorize it on a new one.

If you are still using , you likely appreciate its stability and the specific workflow it offers. However, managing your software activation—specifically finding and applying your License Key and Authorization Number —can be confusing, especially since Trimble has transitioned toward subscription-based models.

This guide explains how these credentials work, how to find them, and what to do if you are having trouble activating your classic license. What are the License Key and Authorization Number?

Once you have your numbers ready, follow these steps to activate the program:

Copy and paste your and Authorization Number exactly as they appear in your email. Click Add License to confirm. Important: The End of "Classic" Licensing

Open the window (this usually appears when you launch the app). Click on the License tab on the left sidebar. Click Add License .

SketchUp 2019 was designed for older OS versions (like Windows 10 or macOS Mojave). If you are on Windows 11 or a modern macOS (Ventura/Sonoma), the licensing service may fail to run due to compatibility issues. Moving Forward