Low severityauthentication
Power BI Error:
AADSTS50197, User Could Not Be Found
What does this error mean?
Microsoft Entra ID (Azure AD) cannot resolve the sign-in because two identities with the same UPN or email exist across tenants.
Common causes
- 1A guest (B2B) user has the same UPN/email as a member account in the same tenant
- 2Personal Microsoft Account (MSA, e.g. outlook.com) and a work/school account (Entra ID) share the same email address
- 3User was migrated or invited cross-tenant and the source account was never cleaned up
- 4Stale/duplicate user object in Entra ID after a domain rename or tenant consolidation
- 5The account used for Power BI / Fabric authentication exists in multiple tenants and the home tenant cannot be determined
How to fix it
- 1Sign out completely (close all browser sessions or use an InPrivate/incognise window) and sign in again — this resolves most cases where a cached personal MSA conflicts with the work account
- 2In the Microsoft Entra admin center → Users, search the affected UPN/email; if two objects appear (guest + member), delete or rename the duplicate
- 3If the conflict is between a personal MSA and a work account on the same email, rename the personal account at account.live.com or have the user pick the work account on the 'Which account do you want to use?' screen
- 4For service principals / Power BI dataset gateways, re-bind the data source to a single, unambiguous service account that exists in only one tenant
- 5If the issue persists after dedup, open a Microsoft support ticket with the CorrelationId/Timestamp from the error — Microsoft has to clear the conflict server-side