---
title: "\"The Parameter is Incorrect\" Error When Running Lynx.Config.ps1"
slug: "the-parameter-is-incorrect-error-when-running-lynxconfigps1"
description: "What to do when you receive a \"The Parameter is Incorrect\" error running Lynx.Config.ps1 on Lynx versions 1.5.x."
updated: 2022-06-06T18:38:33Z
published: 2022-06-06T18:38:33Z
canonical: "healthcare.rapididentity.com/the-parameter-is-incorrect-error-when-running-lynxconfigps1"
---

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# The Parameter is Incorrect - Error When Running Lynx.Config.ps1

## "The Parameter is Incorrect" - Error When Running Lynx.Config.ps1

### APPLIES TO

LYNX versions 1.5.x

### PROBLEM/NEED

When installing Lynx on a server, I am receiving an error stating "The parameter is incorrect" when running the Lynx.Config.ps1.

### ROOT CAUSE

One cause of this issue is that the copied thumbprint of the certificate includes a hidden character at the beginning of the string. If you copy and paste the thumbprint of the certificate into the script (or into Notepad) and remove the spaces, the hidden character at the beginning of the string will cause the script to fail to configure the port to use the certificate.

### RESOLUTION

1. Position your cursor at the beginning of the first visible character in the certificate thumbprint and hit backspace to remove the hidden character (see location below), and then re-run Lynx.Config.ps1.

![](https://cdn.document360.io/f2567005-8048-43b2-8bfc-3abc2da42bca/Images/Documentation/the-parameter-is-incorrect---error-when-running-lynx.config.ps1-image-fjt0bil9.png)