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msix-no-cert iqnite

requirescmd self-signed-certificates self-signing-of-msix-files selfsignedcertificates selfsigningofmsixfiles
Use this command to install msix-no-cert:
winget install --id=iqnite.msix-no-cert -e

msix-no-cert: A PowerShell Utility for MSIX Installers with Self-Signed Certificates

Primary Purpose:
msix-no-cert is a PowerShell utility designed to create installers for MSIX files using self-signed certificates, offering an alternative to costly official certificates.

Key Features:

  • Self-Signed Certificate Support: Enables the creation of installers without requiring an expensive official certificate.
  • Customization Options: Allows users to set title, description, icon, and version for their installer.
  • JSON Configuration: Supports a JSON file for streamlined setup, reducing manual input.
  • Informative Output: Provides clear guidance during the installation process.
  • Winget Installation: Easily installable via winget, ensuring straightforward setup.

Audience & Benefit:
Ideal for developers and IT professionals needing to deploy MSIX packages without an official certificate. This tool offers cost savings and flexibility in installer creation, though users should be aware of potential security warnings from antivirus software.

This utility is a valuable resource for those seeking efficient and economical solutions for MSIX deployment.

README

Self-signed MSIX package creation tool

Normally, Microsoft package installers (MSIX) require a certificate signed by an official certificate authority, which can cost up to 500$/year. For further details, see this issue.

This PowerShell script works around the issue by installing a self-signed certificate (which is free) to the user's machine and running the package installer afterwards.

Before you begin

The Microsoft Store allows individuals to publish and certify apps for free. If you are eligible, consider publishing your app through the Microsoft Store instead of using this tool, as it provides a more secure and trusted installation experience.

If you decide to use this tool, be aware that some antivirus software, such as Windows SmartScreen, might show security warnings when trying to run the installer. While the user can usually bypass these warnings by choosing to run the installer anyway, it is important to inform your users about this possibility beforehand to avoid confusion or mistrust. Also, it will require administrator privileges to install the certificate, which might not be suitable for all users.

Credits

This tool utilizes PS2EXE by Markus Scholtes to convert PowerShell scripts into executable files. For more information, visit the PS2EXE GitHub repository.

Installation

The tool is available on the PowerShell Gallery. It can be installed with the following command:

Install-Script -Name msix-no-cert

Usage

To create an installer, run a command in the following format:

msix-no-cert  [-o ] [-c ] [-t ] [-d <description>] [-i <icon.ico>] [-v <version>]

Options:

  • -o, -output Output path for the installer archives.
  • -c, -cert Path to the certificate file.
  • -t, -title Title of the installer.
  • -d, -description Description of the installer.
  • -i, -icon Path to the icon file for the installer.
  • -v, -version Version number for the installer.
  • -h, -help Display this help message.
Versions
2.2.1
Website
github.com
License
Last updated
4/10/2026
Download latest version
  • -config Path to a JSON configuration file, to be used instead of the above options.

    • Example:

    msix-no-cert installer.msix installer.appinstaller -o output -c certificate.cer -t 'My Cool App Installer' -d 'Installs My Cool App, an app that does something.' -i my-app-icon.ico -v '1.0.0'

    JSON Options

    You can create a JSON configuration file with the command options, so you don't have to manually enter them every time.

    {
  "input": ["installer.msix", "installer.appinstaller"],
  "output": "output",
  "cert": "certificate.cer",
  "title": "My Cool App Installer",
  "description": "Installs My Cool App, an app that does something.",
  "icon": "my-app-icon.ico",
  "version": "1.0.0"
}

    You can then use the following command to create the installer, based on your JSON file:

    msix-no-cert -config <path-to-json-file.json>

    Troubleshooting

    If any errors occur during the installer creation, ensure that:

    • the script execution policy allows running scripts
    • PS2EXE is installed
    • you have passed all parameters correctly
    • all relative paths are correct
    • the certificate is in .cer format
    • the app icon has the .ico file extension