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bvenhaus's avatar
bvenhaus
Copper Contributor
Dec 14, 2021
Solved

The ms-appinstaller protocol has been disabled.

I just found out that users can no longer install my MSIX from my website. This is a WPF application packaged with "Windows Application Packaging Project" (wapproj). When users click the "Get the app...
  • Aditi_Narvekar's avatar
    Aditi_Narvekar
    Dec 15, 2021

    bvenhaus Thank you for your question. We removed the ms-appinstaller custom scheme due to a security vulnerability. We do intend to bring this back, and are working on it. For now, you can update the link on your website by removing 'ms-appinstaller:?source='

     

    <html>
    <body>
        <h1> MyApp Web Page </h1>
        <a href="http://mywebservice.azureedge.net/HubApp.msix"> Install app package </a>
        <a href="http://mywebservice.azureedge.net/HubAppBundle.msixbundle"> Install app bundle  </a>
        <a href="http://mywebservice.azureedge.net/HubAppSet.appinstaller"> Install related set </a>
    </body>
</html>

     

     

jmiddour's avatar
jmiddour
Copper Contributor
Jan 04, 2022

To anyone else facing implementing a workaround and is using Azure pipelines:

 

here is a yaml task that will edit the generated html to remove the protocol and include explicit instructions that the button will cause a download, and the downloaded file should be run.

 

Anonymized example from my implementation:

 

And here is the task:

 

    - task: PowerShell@2
      inputs:
        targetType: 'inline'
        script: |
          $x = gci -Recurse *.html
          $page = get-content $x
          $newpage = $page |  foreach { [regex]::Replace( $_,'ms-appinstaller\:\?source\=','' ) }
          $newpage = $newpage |  foreach { [regex]::Replace( $_,'(<div class.*app-description[^<]*</div>)','$1'+[System.Environment]::NewLine+'<div class="insert instructions"><p style="color:red" >Installation instructions:<br>1. Click the install button to begin download of installer file<br>2. After download completes run installer file to install application</p></div>' ) }
          set-content $x -Value $newpage

Note that there may be more efficient ways of accomplishing this, but I went with what I knew and could make generic.

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