This error will occur if:
Your Ubisoft account has been locked.
You have attempted to log in with the incorrect details.
There is an ongoing Ubisoft Services outage.
To resolve this:
• Check if there is an ongoing Ubisoft Services outage.
• Confirm that your Ubisoft account login details are correct.
• Check if your Ubisoft account has received a temporary and permanent lock.
If you continue to receive this error message after trying these steps, or you have any other questions, please get in touch.