Error Code Portal
MicrosoftMicrosoft Entra IDError code

AADSTS50003

MissingSigningKey

Alternative forms: 50003

What does this code mean?

Code AADSTS50003 · An issue reported by Microsoft Entra ID.

Official explanation · Original text

MissingSigningKey - Sign-in failed because of a missing signing key or certificate. This might be because there was no signing key configured in the app. To learn more, see the troubleshooting article for error AADSTS50003. If you still see issues, contact the app owner or an app admin.

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