Error Code Portal
MicrosoftMicrosoft Entra IDError code

AADSTS1000000

UserNotBoundError

Alternative forms: 1000000

What does this code mean?

Code AADSTS1000000 · An issue reported by Microsoft Entra ID.

Official explanation · Original text

UserNotBoundError - The Bind API requires the Microsoft Entra user to also authenticate with an external IDP, which hasn't happened yet.

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