generated: '2026-06-20'
method: searched
source: live /.well-known/ probes of Power BI + Microsoft hosts
notes: >-
  api.powerbi.com and app.powerbi.com expose no valid /.well-known/ documents
  (security.txt on app.powerbi.com returns a 200 HTML error page, not RFC 9116
  text). The authoritative security.txt is served at the registrable parent
  domain www.microsoft.com (MSRC), which governs powerbi.microsoft.com.
hosts:
  - host: https://api.powerbi.com
    documents:
      - path: /.well-known/security.txt
        status: 404
      - path: /.well-known/openid-configuration
        status: 404
      - path: /.well-known/oauth-authorization-server
        status: 404
      - path: /.well-known/ai-plugin.json
        status: 404
      - path: /.well-known/api-catalog
        status: 404
  - host: https://app.powerbi.com
    documents:
      - path: /.well-known/security.txt
        status: 200
        note: returns Power BI HTML error page, not a valid security.txt
  - host: https://www.microsoft.com
    documents:
      - path: /.well-known/security.txt
        status: 200
        file: power-bi-security.txt
        format: rfc9116