Questions tagged [msix]

New package format for Win32, Desktop Bridges, and Universal Windows Platform (UWP) applications.

MSIX is a new package specification which provides a unified packaging format for Win32, Desktop Bridges, and Universal Windows Platform (UWP) applications.

MSIX was built from the ground up to deliver complete containerization for Windows 10 applications. The format utilizes the AppX application framework and provides a path to deploy all Windows 10 Applications to the Windows Store. It inherits all the great features in UWP and most importantly, it applies to all Win32, WPF, Windows Forms, and UWP applications.

Importantly this new and in-progress MSIX package format is essentially a major improvement of the current AppX format - rather than the MSI format - despite the name.

Microsoft seems to envision a future where MSIX not only replaces MSI, but also creates a package format which cross-platform Microsoft applications can recognize and use on any platform (iOS, Android, MacOS, and Linux).


MSIX is an emerging technology with little official information currently available. Accordingly the above information has been assembled primarily from the following sources:

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UWP Unit Tests Don't Run from MSIX

We've changed the minimum target version of our app (and unit test app) to 1809 (17763) and now MSBuild generates MSIX files instead of APPX files. VSTest doesn't seem to like it... I've tried both MSIX and MSIXBUNDLE but both have the same…
James Esh
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How to Sign exe or msix Setup that can run on everywhere

I want to sign an Exe (msi) or MSIX setup file to run on all systems without any problems (like smart screen). I used InstallShield and Advanced Installer for creating setup Both of these applications can be signed by the PFX file However, the user…
Atena
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How to invoke code in C# optional package from a UWP app written in C#

It is now possible to create optional package in C#. However, it is not clear how to invoke the code in the optional package from a C# UWP main app, especially if we need to invoke it in a generic fashion. Say, I have a plugins within the optional…
resp78
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Add-AppxPackage: Invalid data. (0x8007000D) when packaging standalone executable

I'm trying to package doxygen to be distributed in the Microsoft Store, but I'm having trouble converting the app manually. (Doxygen is as simple as it gets, 4 file: 3 .exe and 1 .dll) I wanted initially to just export the the most frequently used…
Meteorhead
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Can python packages be distributed via the MS Store (MSIX)?

Assuming we have a working Python app (in this case, PythonTurtle) which we would like to distribute via the Microsoft Store, is it possible to package it as an MSIX and allow users to easily install it? Any help would be appreciated!
Udi
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Create a MSIX bundle containing a UWP app and a Windows service

I have read in some threads that MSIX will start to support also windows services from the January build. But I only seem to find information of how to migrate an existing installer containing a service to MSIX. How should I do if I want to create a…
Berglund
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Replace click-once application with msix counterpart

I'am I trying to migrate an old legacy click-once application, written in. Net and winforms. I (think) want to lift it to msix and.net core. But there is something in click-once that seems impossible to do with msix. The list of things that msix…
Jerker Pihl
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How to create an MSIX package for WinForms app?

I'm trying to move to MSIX to install our application, which is currently deployed to our customers via a ClickOnce installation which requires updating on startup, if there is an update. Its a .Net Framework (4.7.2) WinForms app. I'm a bit lost…
Andy
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Unable to upload the Electron appx app to the MS app store

Bundle MSIX packages: I have created .msix package for windows App. I tried to submit in MS store, Please refer attachment for error: As error mentioned, the existing uploaded package is in bundle format. and the package we created in .msix/appx…
Priyank
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Unhandled Exception when try to create MSIX installer in Flutter

I was trying to create MSIX installer by following this instruction https://docs.flutter.dev/platform-integration/windows/building However, when I tried running dart run msix:create I encountered this exception: Building package executable...…
RBamba
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.net MAUI dependencies

I need to submit a project written in .Net MAUI to the Microsoft Store. One of the libraries I'm using requires VCLibs. How can I add the necessary dependencies? Adding them to the *.csproj file didn't make any difference. Adding them to the…
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Update MSIX package with PackageManager fails in x86

I am currently working on updating my application deployed with MSIX package from my code. To do that, I am using the object PackageManager and the associated method AddPackageByAppInstallerFileAsync. The problem comes now, I want to set the…
Kiki5629
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Visual Studio trying to package app using MSIX, "project.assets.json not found" error

I have a visual studio solution (2202 V17.5.4), made up of three sub-projects for my app, and then an extra project for the MSIX deployment toolset, using Microsoft.Windows.SDK.BuildTools V10.0.22621.756. the app is C# .NET 7.0. My app and its…
Toby
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How to replace a .winmd in a customer's .appx, .msix, .msixbundle package?

Scenario : A customer is using my SDK (a .winmd file), and is reporting a problem. They have sent me their .appx file. I wish to replace the SDK in their .appx file with a debug version of my SDK, so that I can debug the customer's problem. I…
Greg Thatcher
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MSIX FileTypeAssociation's SupportedFileTypes won't take over as default app

I am creating an MSIX installer for my app and I'm trying to set it as the default app for a couple of file extensions. I am getting mixed results. What I have found is that there are 3 states that a file type association can be in when you look at…
mirkaim
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