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ndee8sh's avatar
ndee8sh
Copper Contributor
Apr 16, 2021
Solved

Edge WebView2 Runtime lets our Store Office Add In fail

Hi there,

we have an Office AddIn (Content Add In for PowerPoint) in the store for a long time.

With this Office Version we get a "Too many redirect" error when the Add In is authenticating:

The add in and the server we are connecting does not have changed.
Now I simply de-installed the Microsoft Edge WebView2 Runtime (89.0.774.76)

Now our Add In works again like expected.

Any ideas or is this just a bug in WebView2?
Thanks, Andi

  • ndee8sh's avatar
    ndee8sh
    May 25, 2021

    The redirects in authentication flow are due to a stricter handling of cross site cookies in chromium based webview.
    The cookies must set the SameSite-Mode to None and Secure to true to support saving of authentication cookies cross site.

    See the complete answer and solution here.

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  • ndee8sh's avatar
    ndee8sh
    Copper Contributor
    May 25, 2021

    The redirects in authentication flow are due to a stricter handling of cross site cookies in chromium based webview.
    The cookies must set the SameSite-Mode to None and Secure to true to support saving of authentication cookies cross site.

    See the complete answer and solution here.

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