Forum Discussion
MSIX Side loaded app fails to start with 'Failed due to unknown reason.'
Our application (https://application-downloads.azurewebsites.net/), suddenly stopped working today with no warning and no changes being deployed. The application shows the error “Cannot open app pack...
We've had the same issue today, it looks as though Microsoft had released a faulty version of App Installer. We have been advising users to update App Installer via the Microsoft Store which appears to resolve the issue.
We also successfully tested on your app.