If your machine has internet access, you can activate your new Unity license online through the Unity Editor.
To actival a new license for Unity Plus or Pro, you must have a Unity Plus or Pro license, and your serial number, which Unity emails to you. If you don’t have a Unity license, speak to the Owner of your license, or contact Unity Customer Services.
If you already have Unity installed, open it, and in the top menu go to Unity > Manage License.
If you don’t have Unity installed, download and install the Unity Editor. Go to Download Unity to get the latest version. If you’re not sure which type of license you need, go to the Unity Store and view comparisons for Unity Personal, Plus and Pro.
Open the Editor and sign into your Unity ID. If you don’t have an existing Unity account, create one.
When you log into Unity for the first time, the License management window appears.
If you already have Unity installed, or if the License management window doesn’t appear, navigate to the top menu and go to Unity > Manage License.
In the the License management window, select the version of Unity you want to activate (Plus or Pro, or Personal). If you are activating a Unity Plus or Pro license, enter your serial number. When you’re done, click Next.
If the license activates successfully, Unity displays a “Thank you!” message. Click Start Using Unity to continue.
If you encounter any error codes or other problems during the activation process, they might be caused by the following issues:
Note: You cannot contact the Customer Service team via the Unity documentation feedback form below. You must send a support ticket to Unity Customer Services.