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WAPPROJ APPXUPLOAD
File conversion

Convert WAPPROJ to APPXUPLOAD

Verified by Adam B.· reviewed by FE Editorial ·updated Jul 23, 2026
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Is it possible to convert WAPPROJ to APPXUPLOAD?
Yes - WAPPROJ converts to APPXUPLOAD.

Right-click the packaging project in Visual Studio 2022, choose Package and Publish | Create App Packages, select Microsoft Store and your architectures, and it generates the single .appxupload (or .msixupload) for Partner Center. Choosing Sideloading instead does not create the upload file.

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Tested on macOS, Windows & Linux
Last verified Sep 2026

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Why convert WAPPROJ to APPXUPLOAD?

An .appxupload is a Store-submission wrapper that bundles the app packages for each architecture plus a symbol file, so developers build the .wapproj in Store mode to get one file to hand to Partner Center. See .appxupload.

How to convert WAPPROJ to APPXUPLOAD

Create App Packages (Microsoft Store) EASIEST

Right-click the packaging project, choose Package and Publish | Create App Packages, pick Microsoft Store and associate the app, then build. Visual Studio writes the .appxupload to AppPackages.

MSBuild for Store FREE

Run msbuild MyApp.wapproj -p:Configuration=Release -p:UapAppxPackageBuildMode=StoreUpload -p:AppxBundlePlatforms="x86|x64|arm64" to generate the .appxupload in CI.

About these formats

.WAPPROJ Windows Application Packaging Project File

A .wapproj file is a Windows Application Packaging Project used in Visual Studio to package a desktop app (Windows Forms, WPF, or Win32) as an MSIX or APPX package for the Microsoft Store…

Open .WAPPROJ details →
.APPXUPLOAD Microsoft Visual Studio Windows 8 application upload file

A .APPXUPLOAD file is associated with Microsoft Visual Studio Windows 8 application upload, a developer file.

Open .APPXUPLOAD details →

Quality & what to watch

  • You only get an .appxupload in Store/StoreUpload mode - the Sideloading option deliberately skips it.
  • The file is a container bundling per-architecture packages plus PDB symbols; it's not a single runnable app.
  • The app must be associated with a Partner Center reservation, or the wizard can't stamp the correct identity.

Frequently asked questions

Why is there no .appxupload after build?
You likely chose Sideloading; re-run the wizard and pick Microsoft Store.
Can I install an .appxupload directly?
No. It's for Partner Center upload, not for sideloading onto a device.
Does it include multiple architectures?
Yes, one .appxupload can bundle x86, x64 and arm64 packages plus symbols.
Can CI produce it?
Yes, use msbuild with UapAppxPackageBuildMode=StoreUpload.