Ensure you are actually installing SketchUp Pro 2019. A 2018 or 2020 license key will not work on the 2019 version.
Unlike the newer , which only require a Trimble ID login, the 2019 Pro version requires these specific alphanumeric strings to be entered manually into the software. How to Find Your 2019 License Credentials
SketchUp 2019 is considered "End of Life." Trimble no longer provides technical support or security updates for this version. Sketchup Pro 2019 License Key And Authorization Number
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
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? Ensure you are actually installing SketchUp Pro 2019
Look for messages from "SketchUp Sales" or "Trimble" with the subject line "SketchUp Pro License Information."
A unique serial number starting with a letter (usually "U" or "V" for 2019) followed by a series of characters. How to Find Your 2019 License Credentials SketchUp
For older "Classic" versions of SketchUp like the 2019 edition, Trimble used a two-part credential system for activation:
If you still have the software installed on an old computer, go to Help > License (Windows) or SketchUp > License (Mac). The license key will be partially visible there.
A separate code that "unlocks" the license key for use on a specific machine.
