Device and anonymous routes published the "anonymous" placeholder as RequestContext.UserPrincipalName. UserRateLimitMiddleware skips only on an EMPTY UPN, so every agent of every tenant was bucketed under user_ratelimit_anonymous and throttled against the 120/min per-user limit. On 2026-07-21 21:00-21:30 UTC that rejected 1821 agent requests with 429 (/api/agent/telemetry, config, register-session, error); the 7-day trend shows it recurring and growing with fleet size. - PolicyEnforcementMiddleware: RequestContext.UserPrincipalName carries a genuine JWT UPN or nothing. decision.UserIdentifier keeps the placeholder for log lines. - Device/bootstrap routes already hold their own limit in SecurityValidator (per cert thumbprint / per bootstrap token), so they lose nothing. - stats/platform and diagnostics/download had NO limiter of their own and were riding on the accidental shared bucket. Both now limit per trusted client IP (60/min and 30/min) via ClientIpExtractor, matching the HealthCheck pattern. - 13 new tests pin the empty-UPN contract across all 12 device/anonymous routes, plus a guard that an authenticated caller still surfaces its real UPN. Solution suite 5552 tests green. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
AutopilotMonitor
Advanced monitoring and troubleshooting solution for Windows Autopilot deployments. Gain full visibility into every enrollment session with a detailed event timeline, fleet health dashboards, and session reporting. Define custom analysis rules to automatically detect issues and gather rules to collect targeted evidence. Retrieve diagnostics packages on demand, configure agent settings like auto-reboot behavior and automatic timezone adjustment — all managed centrally from the web dashboard.
Private Preview
Autopilot Monitor is currently running as a Private Preview. Visit autopilotmonitor.com to request access and learn more.
Overview
Autopilot Monitor provides real-time tracking, intelligent diagnostics, and automated troubleshooting for Windows Autopilot enrollment processes. It consists of:
- Bootstrap Script — PowerShell script deployed via Intune that starts monitoring early in the enrollment process
- Monitoring Agent — Lightweight .NET application that collects telemetry and evidence during enrollment
- Backend API — Azure Functions-based ingestion and processing pipeline
- Web Dashboard — Next.js application for real-time monitoring and fleet analytics
Architecture
For detailed information about the system architecture, components, and data flow, see Architecture Documentation.
Documentation
Full admin documentation is available at docs.autopilotmonitor.com
License
This project uses a split licensing model:
- MIT License — Agent (
src/Agent/) and Shared library (src/Shared/) — unrestricted use on end-user devices - AGPL-3.0 — Backend (
src/Backend/), Web Dashboard (src/Web/), and MCP Server (src/McpServer/) — server-side components remain open source
See LICENSE for full details.



