UiPath Robot to Orchestrator Connection Explained for Infrastructure Engineers

Help Orchestrator
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1

Hi UiPath Community,

I wanted to share a simple infrastructure-level explanation of how UiPath Robot connects to Orchestrator. This may help beginners and infrastructure engineers troubleshooting connectivity issues.

Core Components Involved:

  1. UiPath Robot Service (Windows Service)
    Installed on the robot machine. It runs in the background and manages communication.

  2. Machine Key / Machine Template
    Used for authenticating the robot machine with Orchestrator.

  3. UiPath Assistant
    User interface that interacts with the Robot Service.

  4. Orchestrator (Hosted on IIS / Automation Cloud)
    Central server managing robots, processes, queues, and assets.

Connection Flow:

Robot Service → HTTPS (Port 443) → Orchestrator URL → Identity Server → Authentication → Robot Connected

Common Infrastructure Issues:

• Incorrect Machine Key
• Firewall blocking outbound HTTPS (443)
• SSL certificate issues
• Incorrect Orchestrator URL
• Robot service not running
• Identity Server misconfiguration

Infrastructure Troubleshooting Steps:

  1. Verify Robot Service is running (services.msc)
  2. Verify Orchestrator URL is accessible in browser
  3. Check firewall allows outbound HTTPS
  4. Restart UiPath Robot Service
  5. Verify machine template assignment in Orchestrator

Infrastructure engineers should also monitor:

• IIS Application Pool status
• SQL Server connectivity
• SSL certificate validity

I hope this helps anyone troubleshooting robot connectivity.

Happy automating!

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Hello @muthuraman.g!

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