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Jay

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    22 comments  ·  Azure Active Directory » Application Proxy  ·  Flag idea as inappropriate…  ·  Admin →

    We are looking at enabling a feature that focuses on supporting CORS preflight requests between two applications. This works by allowing you to configure the response and have App Proxy handle it on behalf of the app.

    A pre-requisite for this feature to work is that the user must be able to authenticate into the second application in order to avoid a CORS issue from the login flow into the second app.
    To avoid this the user will have to make sure they have already accessed the 2nd application before the CORS request, and has valid credentials. This should work for wildcard apps and can also be achieved by adding a fake link / image to the 2nd application in the first application.

    We would love to get your feedback on this requirement and if this is something that will fit your use case.

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    Jay commented  · 

    Our SharePoint Online portal leverages Application Proxy to consume various on premise resources. We currently use the hacked iFrame approach for authentication for all requests going thru App Proxy to get around this limitation. Its cumbersome and a maintenance nightmare. There's also unnecessary repeated behind the scenes activity/load in the browser until the user is authenticated. This needs to be looked at and addressed immediately before it becomes a major development hassle.

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