You can't use invalid or duplicate emails.

[Anonymous]

Hi All,
I have been facing issue on power bi service since 3 days, While i try to send a report to anyone it shows me error You can't use invalid or duplicate emails.
I have premium capacity workspace. 

[Anonymous · Accepted solution]

Hi @Anonymous ,

Please have a try.

It seems to happens when users connect directly to app.powerbi.com without first connecting to Office365. Our Office365 tenant (Azure) is forcing MFA but since the user did NOT connect to Azure first, when we try to share a dashboard, PowerBI tries to talk to Azure and that fails because MFA wasn't done. Inspecting the browser network communication, we see that Azure returns a 'AdalMultiFactorAuthRequiredErrorCode'. If we log into Azure (and MFA) first and THEN, connect to PowerBI, then sharing works.

Best Regards

Community Support Team _ Polly

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Maximilian]

I have an external User who wants to share his datasets with another User Group (which is part of my power bi tenant). External users have to log in via app.powerbi.com. How can i enable my user to share his dataset if he can't log in via app.powerbi.com? 

[Anonymous]

@Anonymous Thank you.