Row-Level Security Users Disappeared and Cannot be Re-Entered

[ScottNixon]

Hello All,

We have a dashboard with row-level security enabled for users outside of our organization. Users were entered, confirmed access and successful use. We were notified today that some lost access, check to find they're now missing from the Row-Level Security for the dataset. Partially entering the email address leads to "you can't use invalid or duplicate emails". Full entry of their exact email address reports "One or more e-mail addresses with the following domains are outside your organization".

Not sure what the issue is, as this was literally working (and continues to work) for several other users? 

[v-yanjiang-msft]

Hi @ScottNixon ，

Firstly I suggest you check the users status in admin center, whether they are active or not. If they are active, you can try to delete them then invite them again with Azure AD B2B.

Best regards,

Community Support Team_yanjiang