Proxy not appearing or listed as disconnected

Problem: A Discovery Proxy never appears in Discovery → Proxies or stays Disconnected/Pending after approval.
Goal: Get the proxy visible and connected to the master vScope.

Prerequisites

• You are using Discovery Proxies.
• You know the master host/port and can adjust proxy config.
• You can restart the proxy service and view logs.

Checklist

1. Version mismatch
   Master and Proxy versions must match. If they differ, reinstall/upgrade the Proxy to the master’s version. After a master upgrade, older proxies may not reconnect automatically.

2. Network connectivity
   The Proxy must resolve and reach the master on the configured port. Common causes: wrong DNS, wrong IP, routing/VLAN issues, wrong port.
   Verify: master hostname resolves; port is open and reachable; no recent IP/network changes.

3. Firewall / security software
   Outbound Proxy → Master on the chosen port must be allowed. Check Windows Firewall, network firewalls, AV, SSL/TLS inspection/DPI.

4. Proxy service not running
   Ensure the Proxy service is running (e.g., services.msc on Windows). Restart if needed; check Event Viewer or proxy logs for errors.

   • Windows log (default): C:\vScopeProxyData\log\debug.log
   • Linux log (default): /var/log/vscopeproxy/debug.log

5. Time synchronization
   Large clock drift can break authentication. Sync both Proxy and Master to a reliable NTP source.

After fixes

• Restart the Proxy service.
• In vScope, go to Discovery → Proxies and click Refresh. Approve again if it reappears under Available.

Related

• Setup guide: Discovery Proxies
• FAQ: Discovery Proxy FAQ