This is how you would download Windows Store apps, without being required to use the Microsoft Store every time—useful if your company has disabled the Store, or in the scenario where you would like to customize the App install.
(1) Download and install Fiddle on a reference computer—a computer that currently needs the Windows Store application; this one reference machine does require a working Windows Store.
(2) Prepare Fiddler to capture Win App URL (you need this direct URL to actually download the APP). In Fiddler, select WinConfig, check Microsoft Store, and click the Save Changes button.
Begin capturing.
(3) Install App from the Microsoft Store.
(4) Monitor Fiddler for URL changes. Normally, when you see the mp.microsoft.com URLs popping up, you can stop capturing. Click Find, search for appx, and the following will be highlighted. Just right-click on one of the highlighted links, click Copy, click Just Url. Now you have the direct URL.
(5) Use URL to download App. Just paste the URL into a browser.
(6) The App will download. Take the App and repackage or install it.
* this process works for .appxbundle and .msixbundle
Notes
Removal
Remove-AppxPackage Microsoft.MicrosoftStickyNotes_8wekyb3d8bbwe
Remove-AppxPackage Microsoft.MicrosoftStickyNotes_3.6.76.0_x64__8wekyb3d8bbwe
Install using DISM
DISM /image:c:\mount\windows /add-ProvisionedAppxPackage /packagepath:e:\apps\amd64\Microsoft.MicrosoftStickyNotes_8wekyb3d8bbwe.appxbundle /licensepath:e:\apps\amd64\Microsoft.MicrosoftStickyNotes_8wekyb3d8bbwe.xml /dependencypackagepath:e:\apps\amd64\Microsoft.VCLibs.x64.14.00.appx /dependencypackagepath:e:\apps\amd64\Microsoft.VCLibs.x86.14.00.appx /dependencypackagepath:e:\apps\amd64\Microsoft.NET.Native.Framework.x64.1.3.appx /dependencypackagepath:e:\apps\amd64\Microsoft.NET.Native.Framework.x86.1.3.appx /dependencypackagepath:e:\apps\amd64\Microsoft.NET.Native.Runtime.x64.1.3.appx /dependencypackagepath:e:\apps\amd64\Microsoft.NET.Native.Runtime.x86.1.3.appx