There are many different reasons why license activation might fail, and each error message points to a different underlying cause. The first step to resolving your issue is to identify the exact error message or problem you’re experiencing.
Below, you’ll find a list of the most common Unity Editor license activation errors. Click the link that matches your specific error to access step-by-step troubleshooting instructions tailored to that problem.
Common Unity Editor license activation errors
- I receive a ‘’Machine Identification Is Invalid For Current License’’ when attempting to activate my license
- I see the message 'Your license is already active on two devices. Go to Unity ID to manage seats' when opening the Unity Hub. What does this mean?
- I see the error ‘You seem to be offline while using a Unity Personal license. Connect to the internet to confirm your license. Your offline grace period ends today’ when I open the Hub
- I see the error, 'Something went wrong. Please sign in again.' when attempting to sign in to the Unity Hub and Unity ID portal
- I see the error, 'No active licenses' when I open the Unity Hub
- I see the error 'It took too long to activate your license'
- I see the error 'Unable to refresh license. Please try again'
- I see the error, 'Activation failed: please make sure serial number is valid. You can also check the Hub log or contact Unity support.'
- I see the error 'Activation failed: this serial number does not belong to your account’ when attempting to activate through the Unity Hub. What does this mean?
- I see the error, ‘Activation of your license failed. Try again or contact Unity Support for help’.
Before contacting support:
Please follow all the troubleshooting steps described in the article for your specific error.
Confirm which steps you have already taken
Provide your Unity Hub log files.
Supplying this information is required for us to investigate your issue further.