Hi, today we are having problems with power bi app. We can access to the apps but after some minutes the session is closed due to a changes in the services.
The solution is log off and log in but it isn't a friendly navigation.
This is a known issue as below:
Power BI B2B guest users may experience issues interacting with content or see a massage saying "The current Power BI Session can no longer be used to communicate with Power BI Service because of a service modification. You must close and re-open your browser to start new session" , to mitigate customers can refresh the browser page. Engineers have identified the root cause and a fix is expected to be deployed by end-of-day 09/22/2020.