A Classic License can activate specific versions of SketchUp. Follow these steps to authorize a the version of SketchUp associated with your classic license:
- Download and install the version of SketchUp you wish to authorize. SketchUp only provides download links for supported versions.
- Open SketchUp. When the Welcome page appears click Add Classic License.
- In the License window click Add License.
- Enter your User Name, Serial Number, and License Key.
- Click OK.
Authorizing SketchUp Pro 2019 with a Classic License
Note: Classic Licenses for use with SketchUp 2017 and older versions can no longer be used to authorize SketchUp. These versions are no longer supported. For more information see End of Support Policy.