---
title: "Blueprint: Test failed. The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel."
slug: "blueprint-test-failed-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel"
tags: ["Blueprint", "test", "failed"]
updated: 2024-04-22T14:29:07Z
published: 2024-04-22T14:29:07Z
canonical: "kb.pharos.com/blueprint-test-failed-the-underlying-connection-was-closed-could-not-establish-trust-relationship-for-the-ssltls-secure-channel"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.pharos.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Blueprint: Test failed. The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.

### **Product:**

Blueprint 3.5 and greater.

### **Problem:**

I receive the following error from Blueprint Server Configuration Tool test.

"Test failed. The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel."

---

### **Information:**

The common name used in the SSL Certificate does not match the Hostname used/set in 'Blueprint Server Configuration Tool' under the 'Server Host Name / Address' field.

The value in the certificate seen below: ![image.png](https://cdn.document360.io/f4fb58ca-1114-4e59-ba1a-d8f647bd6dcf/Images/Documentation/a07998ff-4868-435c-94d4-27a65a8339d0.png?sv=2026-02-06&spr=https&st=2026-11-10T07%3A05%3A57Z&se=2026-11-10T08%3A05%3A57Z&sr=c&sp=r&sig=e1lGFRXcrSaEllsvaZGdCvwbiQ%2Bz4H7fTs1S24kMGck%3D) Should match the value in the configuration tool seen below. ![image.png](https://cdn.document360.io/f4fb58ca-1114-4e59-ba1a-d8f647bd6dcf/Images/Documentation/3c3b07bf-17d8-4652-adbd-23e5b4b0bbf9.png?sv=2026-02-06&spr=https&st=2026-11-10T07%3A05%3A57Z&se=2026-11-10T08%3A05%3A57Z&sr=c&sp=r&sig=e1lGFRXcrSaEllsvaZGdCvwbiQ%2Bz4H7fTs1S24kMGck%3D)

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