power bi embedded - un-authorised

response from Microsoft support, turns out Microsoft changed something... bought the service down and resulted in a night's worth of un-nessicary frustration

Thanks for your time on call.
limitation resulted in an incompatible configuration being returned to the Power BI Service, which in turn caused failures when users attempted to access the service.  To resolve the issue, we have modified the service configuration to a compatible version and have confirmed that service is restored.

Root cause: A recent service configuration change exposed an unexpected limitation in the flighting service used by Power BI.  This limitation resulted in an incompatible configuration being returned to the Power BI Service, which in turn caused failures when users attempted to access the service.

Please reach out to us if you have further quires. We would be happy to assist you.

Considering the previous response, we are going ahead and closing the case.

You may receive an invitation from Microsoft to complete a brief web survey on the service we have provided on this ticket. Your feedback is very important to us and we use it to continually improve our service. We would appreciate if you can take the time to complete this survey.

Hope you consider the efforts made to assist you with the issue.

Thank you again for contacting Microsoft Technical support.