A serial number is a unique identifier assigned to a software product, in this case, SketchUp Pro 2021. It is used to activate the software and verify its authenticity. An authorization code, on the other hand, is a code that is generated based on the serial number and is used to unlock the software's advanced features.

The "Welcome to SketchUp" window will display your current serial number if it is already activated.

In conclusion, Sketchup Pro 2021 is a powerful 3D modeling software that requires a valid serial number and authorization code to unlock its full potential. By purchasing a license from the official Sketchup website or an authorized reseller, you can obtain a serial number and authorization code, and activate the software. If you encounter any issues, refer to our troubleshooting guide or contact Sketchup support. With Sketchup Pro 2021, you can bring your creative visions to life and take your design skills to the next level.

: Visit the SketchUp License Manager and enter your registered email address and serial number to recover lost codes.

If you don't have a license and need to use the software, you have several safe options:

: Look for a confirmation email from sketchupmail@sketchup.com sent at the time of purchase. It will contain your unique Serial Number and Authorization Code . Check Within the App : Windows : Open SketchUp and go to Help > License . Mac : Select SketchUp > License .