---
title: "Error installing Blueprint: \"1603: Error installing Windows Installer engine.\""
slug: "error-installing-blueprint-1603-error-installing-windows-installer-engine"
tags: ["windows", "Blueprint", "error", "install"]
updated: 2024-02-29T05:32:27Z
published: 2024-02-29T05:32:27Z
canonical: "kb.pharos.com/error-installing-blueprint-1603-error-installing-windows-installer-engine"
---

> ## 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.

# Error installing Blueprint: "1603: Error installing Windows Installer engine."

The following error occurs when running the Blueprint installers:

Error installing Blueprint: "1603: Error installing Windows Installer engine."

---

The error message is caused by Windows. It can be safely disregarded - simply click **OK** and proceed with the install. Blueprint will install successfully.

You can prevent this error from occurring by applying the Microsoft® Windows Server 2003 Hot Fix to Windows Installer 3.1 (**WindowsServer2003-KB898715-x86-enu.exe**) prior to installing. This Hot Fix is available in the **HotFixes** directory of the Blueprint CD.

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