Disclaimer: This guide refers to legitimately purchased perpetual licenses. SketchUp Pro 2020 does not support modern Trimble ID sign-in for classic licenses. If you are looking for alternatives in 2026, consider SketchUp Free
: Copy and paste your Serial Number and Authorization Number directly from your email into the respective fields. Look for keywords like: "Your SketchUp Pro 2020
Look for keywords like: "Your SketchUp Pro 2020 License Renewal" or "SketchUp Classic License Notification" . If you still have SketchUp Pro 2020 running
A Classic license is a perpetual software license. Unlike modern cloud subscriptions that tie your software access to a Trimble ID (email log-in), a Classic license uses a static pair of serial codes. Look for keywords like: "Your SketchUp Pro 2020
If you still have SketchUp Pro 2020 running on an older machine, you can retrieve the license information directly from the software interface: Open . Navigate to the top menu bar.