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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How do I simplify testing / distribution for a Rust application that uses modern Windows APIs?

I am trying to use the Windows 10 Notification Listener API in a Rust project of mine, and I ran into a mysterious error when trying to register a notification event handler: listener.NotificationChanged(&TypedEventHandler::new( move |_sender,…
Bluskript
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Maui Can't open MSIX installer

The Error I published the default Maui Project but I can't open the installer msix file. I always the error The app was not started with no further information why. I can however install it using the powershell script which comes with the…
Der_Floh
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How to Sign appx / msix package using SignTool in GitHub Actions

I'm trying to do the equivalent of this command on a Windows GitHub Actions runner: SignTool sign /fd sha256 /a /f $certificatePath /p $certificatePwd $Packages_2Sign This results in the following error on GitHub Actions: | The term…
Coden00b
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.appinstaller error - schema is not valid for OS

I'm getting the following error when attempting to install my .msix file via an .appinstaller file. This .appinstaller file is using a new schema which is not valid on this OS version. Please update to the latest version of Windows 10. I've tried…
Mike
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MSIX: Icon in Windows' "Apps & Features" panel grayed out

I have a simple image (white text in front of a green background) that is used to generate all the different assets in my MSIX project: All good and well. However, for some reason, that image appears as greyed out in the Windows 10 "Apps &…
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Why does a BITS background copy job (downloading a file) transition immediately into BG_JOB_STATE_TRANSIENT_ERROR for MSIX apps?

I have an app using BITS to download files. When I packaged my app with MSIX, it started behaving strangely. Every background copy job started from the packaged app transitions into the BG_JOB_STATE_TRANSIENT_ERROR state immediately and stays that…
Balázs Szántó
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MSIX / Windows Application Packaging Project - After Publish event or target?

So I have a Windows Application Packaging Project in Visual Studio which generates a MSIX installer. The AppInstaller URI points to an Amazon S3 bucket. What I currently do is I first publish to a local drive, then upload the MSIX package to Amazon…
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The element 'Capabilities' in namespace msix Package.appmanifest xml

I have a warning highlighted for the element:
morleyc
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How can I get trusted pfx certificate for my msix file? That certificate should be trusted for all windows users not only for me locally

I have been developing a flutter desktop application. I'm going to deliver it to users in msix format, but when it comes to installation, it's not possible to install it because of its certificate is untrusted for other users. I need to get somehow…
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How to retrieve list of files in MSIX package with PowerShell

I have a msix package (I have msix file and appxsym file) and I want to retrieve list of files inside of msix package with PowerShell programmatically. I can do this with MSIX Packaging Tool, But I want to do it with PowerShell cmdlets.
sorosh_sabz
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Sign MSIX from Visual Studio 2022 with certificate from Azure Key Vault

like the title states I want to sign a MSXI package from within VS. I have a C# application and a corresponding Windows Packaging Project. I have the Key Vault setup with the permissions a stated in the docs…
Daniel
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MSIX Application does not start until start menu interaction

I am building an MSIX application for windows 10 with a .wapproj project. On some machines (primarily laptops it seems), the application does not start after the user clicks it in the start menu. Instead nothing happens until the user either clicks…
user3190036
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Packaging an .exe file to MSIX and signing it

I have developed an application and want to publish to the microsoft store. I have tried using advanced installer but unless I pay $500 I cannot publish it i think using the trial version? I have also tried using MSIX Package (Windows) but then I…
DSTEP
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UWP App activation error in offline scenario

We have a sideloaded UWP app which has auto update enabled by referring this
Razor
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MSIX cant create folders in AppData

I have an application that is being installed from MSIX installer. It is installing successfully, but when execute it after installation i get an error that there is no such a file in C:/UserName/AppData/Roaming/MyApplication. What i have…
Bartosz Olchowik
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