This error occurs if there is a mismatch between the software version installed and the license key provided. Ensure you have not accidentally downloaded SketchUp 2019 or SketchUp 2021. The serial number must start with a for the 2020 version. 2. "You have exceeded your maximum number of activations"
: Click on the Licensing tab located on the left-hand or bottom menu of the welcome screen. Input Credentials : Click Add License .
SketchUp offers a completely free, web-based version of its software. While it has fewer features than SketchUp Pro, it is a legal, safe, and excellent way for beginners or hobbyists to learn 3D modeling or work on simple projects. This error occurs if there is a mismatch
Visit the Trimble Account Management Portal . Even for older versions, your purchase history may contain the license details in the "Products & Licenses" section.
Search your email inbox for "SketchUp Pro 2020 License," "Authorization Code," or "Trimble." The subject line likely resembles "SketchUp License Information." 2. Use the SketchUp License Manager SketchUp offers a completely free, web-based version of
A crucial piece of context is that . This means:
The license is still actively registered on two other computers. Even for older versions
A Classic License is a perpetual license, meaning you purchased the software once and own that specific version forever. Unlike subscription models, a Classic License for 2020 does not expire, but it also does not include automatic updates to newer versions (like 2021, 2022, or 2026) unless you maintained an active Maintenance and Support plan at the time.