Hello,
Do I need to install anything on server 2019 to run it ?
No, msix is supported for Windows Server 2019 versions.
From your description, I noticed that you are using the command line for releasing msix instead of installing. By referring to this official documentation Publish a .NET MAUI app for Windows with the CLI, you could manually go to the file path after publishing the Windows application, and then double-click to install msix.
Publishing builds and packages the app, copying the signed package to the
bin\Release\net7.0-windows10.0.19041.0\win10-x64\AppPackages\<appname>\ folder
. <appname> is a folder named after both your project and version. In this folder, there's an msix file, and that's the app package.
Best Regards,
Alec Liu.
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