Error Code Portal
MicrosoftMicrosoft Entra IDError code

AADSTS50126

InvalidUserNameOrPassword

Alternative forms: 50126

What does this code mean?

Code AADSTS50126 · An issue reported by Microsoft Entra ID.

Official explanation · Original text

InvalidUserNameOrPassword - Error validating credentials due to invalid username or password. The user didn't enter the right credentials. Expect to see some number of these errors in your logs due to users making mistakes.

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