Click the Add License confirmation button. The software will validate the codes locally or ping Trimble's activation servers to unlock your permanent workspace. Important Technical Considerations and Limitations
: You can also retrieve active license information through the SketchUp License Manager or by contacting support to request an email with your existing codes. How to Authorize SketchUp Pro 2020
Without a valid Classic License Key and Authorization Number, users are limited to the free version of SketchUp, which has limited features and functionality. By obtaining a Classic License Key and Authorization Number, users can:
Ensure you have the SketchUp Pro 2020 installer. License keys are version-specific; a 2020 key will not work on 2019 or 2021 versions. Click the Add License confirmation button
If you have SketchUp 2020 running on an old computer, you can view your license key directly inside the program: Click Help > License in the top menu bar. Mac: Click SketchUp > License in the top menu bar.
SketchUp Pro 2020 was the final major version to offer the "Classic" perpetual license before Trimble shifted exclusively to a subscription-based model. This review breaks down the licensing experience and core features of this specific release.
If you are trying to activate a perpetual, classic license of SketchUp Pro 2020, you likely need the specific Serial Number and Authorization Code sent to you upon purchase. As of 2026, while Trimble has moved entirely to subscription-based models, you can still use a valid classic license, provided you have the original credentials. How to Authorize SketchUp Pro 2020 Without a
Look for an email from sketchupmail@sketchup.com with the subject line containing "SketchUp Pro License Information".
Copy and paste your (ensuring it starts with 'U'). Copy and paste your corresponding Authorization Number .
Searching for free or generated "SketchUp Pro 2020 classic license keys and authorization numbers" on the internet poses severe risks. If you have SketchUp 2020 running on an
to recover your information. You will need the email address associated with the original purchase. Old Version Recovery:
Many users run into issues when reinstalling on a new PC after a hardware failure. Here are the most common errors and their solutions:
Operating older software comes with specific technical limitations that classic license holders must navigate:
Ensure you have downloaded the official, final installer for SketchUp Pro 2020.
The classic license key and authorization number approach offers a cost-effective and perpetual way to use SketchUp Pro 2020. When purchasing from authorized resellers, ensure you receive a valid license key and authorization number. By following the guidelines outlined in this article, you'll be able to obtain and use your SketchUp Pro 2020 classic license key and authorization number with ease.