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A Single-user license is associated with one person. That individual can install the license on up to 2 computers he or she is using, but only one computer can run SketchUp Pro at a particular time. To use your license on another computer, or transfer your license to a new computer, please note the following steps: If you'll no longer be using it, remove your license from your current computer following the steps in the How to Remove a License article. Install SketchUp on the new computer.
If you haven't downloaded and installed SketchUp, please do so. Double-click on the SketchUp 2015 icon on the Desktop. On the "Welcome to SketchUp" dialog, click the Add License
If you have a SketchUp Pro 2015 license and an active maintenance & support plan, then you should have received an email with your new SketchUp Pro 2016 license information. If not, you can request to have the license emailed to you again, or contact your local reseller if that’s where you purchased the license.
If you need to fix a missing or corrupt SketchUp network license file on your existing server:
To move a license file to a new server or shared folder:
If you have a network license and are using SketchUp 8, Maintenance 2, then you need to add a special offline license in order to use SketchUp off your network. Follow one of the sets of steps below to add your offline license. Option one: Unset Network License (Recommended)
Fixing a corrupt or missing license file
If you haven't downloaded and installed SketchUp Pro, please do so. Open the Finder and click on Applications. Browse to the SketchUp # folder. Click on the SketchUp icon. When the Welcome window opens, click the Add License button.
To find your SketchUp Pro license serial number, please do the following based on your operating system. Windows