Error Code Portal
MicrosoftMicrosoft Entra IDError code

AADSTS7500529

The value ‘SAMLId-Guid’ isn't a valid SAML ID

Alternative forms: 7500529

What does this code mean?

Code AADSTS7500529 · An issue reported by Microsoft Entra ID.

Official explanation · Original text

The value ‘SAMLId-Guid’ isn't a valid SAML ID - Microsoft Entra ID uses this attribute to populate the InResponseTo attribute of the returned response. ID must not begin with a number, so a common strategy is to prepend a string like "ID" to the string representation of a GUID. For example, id6c1c178c166d486687be4aaf5e482730 is a valid ID.

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