generated: '2026-06-20'
method: searched
note: >-
  The Microsoft Graph API host (graph.microsoft.com) requires authentication and returns
  401 for all /.well-known/ paths. Discovery is served by the Microsoft identity platform
  (login.microsoftonline.com) and the organization security.txt is published at microsoft.com.
hosts:
- host: https://login.microsoftonline.com
  documents:
  - path: /common/v2.0/.well-known/openid-configuration   # OIDC discovery (RFC 8414 / OIDC)
    status: 200
    file: microsoft-excel-openid-configuration.json
  - path: /.well-known/oauth-authorization-server
    status: 404
- host: https://www.microsoft.com
  documents:
  - path: /.well-known/security.txt          # RFC 9116
    status: 200
    file: microsoft-excel-security.txt
- host: https://graph.microsoft.com
  documents:
  - path: /.well-known/openid-configuration
    status: 401
  - path: /.well-known/security.txt
    status: 401
  - path: /.well-known/api-catalog
    status: 401
  - path: /.well-known/ai-plugin.json
    status: 401