A Floating User license allows you to run multiple instances of TestComplete on multiple workstations in the network. The number of instances running concurrently is determined by the license key. If you have a Floating User license, you can start TestComplete only if the License Manager has at least one Platform license that is not currently in use.
If all the Platform licenses are currently in use, TestComplete fails to start and displays an error message notifying you about the problem. In this case, wait until another user finishes their TestComplete session (and, therefore, releases the license), so that you can start TestComplete on your machine.
Alternatively, consider upgrading your license to allow more concurrent users. For more information on upgrading licenses, see Upgrading Existing TestComplete 15 Licenses.
You can try resolving the problem by using the Licensing Troubleshooter on our web site: