[UWP] Unable to launch apps with desktop4:SupportsMultipleInstances="true" on xbox

Jose Villagra 6 Reputation points
2020-04-27T07:37:07.513+00:00

Hi
We have an app that supports multiple instances on desktop and now we're working on a xbox client, which fails to launch if we have in the manifest the multipleinstances property:

desktop4:SupportsMultipleInstances="true"

If we remove that, the app launches correctly. Sounds like a bug in xbox....

Here is a repo project to reproduce the issue:

https://github.com/villagra/UWPMultipleInstancesBug

Any ideas or workarounds?
Thank you

Universal Windows Platform (UWP)
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  1. Jarosław Kowalewski 16 Reputation points
    2020-04-29T10:58:40.457+00:00

    I have the same problem - after upgrading XBox to OS Version 10.0.19041.1927 our applications stopped working - also purchased ones. Customers are still writing to me about this.
    I am asking for a quick solution to this problem!

    Thank you,
    Kiczmaker

    1 person found this answer helpful.
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  2. Roy Li - MSFT 31,526 Reputation points Microsoft Vendor
    2020-04-28T02:56:29.357+00:00

    Hello,

    Welcome to Microsoft Q&A!

    This is not a bug. According to the document-Create a multi-instance Universal Windows App, it mentions that Multi-instancing is supported by UWP apps that target desktop and Internet of Things (IoT) projects. Xbox is not supported for multi-instance UWP apps. If your app only targets Xbox devices, you might need to remove the namespace prefix desktop4 to run the app in Xbox correctly.

    Thank you.