---
title: Orchestrator SignalR Issues
slug: orchestrator-signalr-issues
createdAt: 2025-06-11T20:26:17.823Z
---

|                                                                                                       |                                                                                                                                                               |
| ---------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Error**                                                                                                  | **Possible Cause**                                                                                                                                            |
| One or more errors occurred. (No connection could be made because the target machine actively refused it.  | Orchestrator is not running.                                                                                                                                  |
| TLS/SSL Error                                                                                              | Thumbprint on Resources/Configuration/OrchestratorPorts is not configured correctly, this should be the thumbprint of the certificate used on the IIS binding |