For older "Classic" versions of SketchUp like the 2019 edition, Trimble used a two-part credential system for activation:

A unique serial number starting with a letter (usually "U" or "V" for 2019) followed by a series of characters.

If you purchased SketchUp Pro 2019, your credentials were sent via email at the time of purchase. Here is how to track them down:

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

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