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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>

     

     

hrb-2's avatar
hrb-2
Brass Contributor
Jan 28, 2022
Thanks for sharing this information. Are you willing to share your scripts (genericized for security concerns of course) and/or provide further details? Unfortunately, it won't help us much as we were in the early stages of an initial rollout so 90% of our users community would not be able to use this workaround but it may help others with an established user base. This Microsoft created debacle also impacts new installs from the internet which use the same protocol, so we are unable to move forward.
DuncanStone's avatar
DuncanStone
Copper Contributor
Jan 28, 2022

hrb-2You can see my solution here https://github.com/MicrosoftDocs/msix-docs/issues/59#issuecomment-832260691

It does not use shell scripts (which also means it does not require developer mode) but you should be able to work out how to change that.

 

This is a workaround for a much older bug  feature but it works here too.

 

While we are on the subject, if you are manually editing your appinstaller file and/or your users are doing a lot of patching or installing at the moment, it is worth paying attention to this one as well: https://stackoverflow.com/questions/64381453/appinstaller-xml-issue/67390614#67390614

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