Enterprise Server and Automation Server Bindings Show "Unresolved"

[Product_Support]

Issue

Bindings between:

• Enterprise Server and Automation Server, or
• Two Automation Servers

...appear as "Unresolved" in the system.

Product Line

EcoStruxure Building Operation

Environment

• Building Operation Enterprise Server
• Building Operation Automation Server
• Binding Diagnostics

Cause

This issue is typically caused by:

1. Incorrect communication configuration
2. Firewall or antivirus blocking communication
3. Port conflicts or usage by other applications
4. Network adapter misconfiguration
5. Unsupported architecture (e.g., EC and ES on same PC)

Resolution

🔒 1. Firewall Configuration

• Ensure Windows Firewall is correctly configured:
  • Use the Firewall Config Tool to set inbound/outbound rules.
  • Refer to: Creating Windows Firewall Rules for Building Operation.
• If unsure, temporarily disable the firewall to test connectivity.
• Watch for network profile switching (Private ↔ Public) during commissioning.

⚠️ Even if ASs appear online, unresolved bindings may still occur due to firewall issues.

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🧩 2. Special Character in Server Name

• For v1.4 or v1.5 servers with an ampersand (&) in the name:
  • Request hotfix:
    • v1.4: R1.4.1.16201 or later
    • v1.5: R1.5.0.1601 or later

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🌐 3. Network & IP Configuration

• Confirm ES IP address matches the PC’s active NIC IP.
  • If not, follow: How to Set the Enterprise Server IP Address.
• Use IP address instead of domain name if DNS resolution is unreliable.
• Ensure all required ports are open between ES and AS.
  • Refer to: Information Technology System Planning Guide → Search “Network Ports”.
• Disable unused network adapters (e.g., Wi-Fi, VMware, VirtualBox).
  • ES should use the primary NIC.

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🔄 4. Repair Communication

• Right-click the ES → Advanced > Repair Server Communication
  • This refreshes the communication tables.
• Detach and re-add ASs to the ES if needed.
  • See: Unable to Add an Automation Server Underneath an Enterprise Server.

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🛡️ 5. Antivirus & Security Software

• Disable network monitoring features in antivirus software.
• For Schneider laptops:
  • Right-click Trellix in system tray → Enable Firewall Timed Groups.

    

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⚠️ 6. Unsupported Architecture

• Enterprise Central (EC) and Enterprise Server (ES) should not run on the same PC with default ports.
  • If testing:
    • Stop EC service or
    • Reconfigure ports to avoid conflicts.

      

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🔍 Additional Tips

• Use the Communication tab on each server to verify peer visibility.