Error Code Portal
MicrosoftMicrosoft Entra IDError code

AADSTS16000

InteractionRequired

Alternative forms: 16000

What does this code mean?

Code AADSTS16000 · An issue reported by Microsoft Entra ID.

Official explanation · Original text

InteractionRequired - User account '{EmailHidden}' from identity provider '{idp}' doesn't exist in tenant '{tenant}' and can't access the application '{appid}'({appName}) in that tenant. This account needs to be added as an external user in the tenant first. Sign out and sign in again with a different Microsoft Entra user account. This error is fairly common when you try to sign in to Microsoft Entra admin center by using personal Microsoft Account and no directory associated with it.

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

Microsoft Entra authentication and authorization error codes ↗

Creator: Microsoft Corporation and contributors
License: Creative Commons Attribution 4.0 International
Checked on: 2026-11-12

Modifications: Extracted official AADSTS table; Markdown stripped; short English error name selected; original Korean product context added. Official general diagnostic guide is distinguished from code-specific troubleshooting. Documentation license explicitly granted by README Legal Notices; repository LICENSE currently contains MIT terms, also retained as evidence.

Source details · Original licenses and notices