[New Teams Client] Download is not working when opening a link in Tab app

[kafka-yu]

Hi team,

We have an issue regarding the download feature in our Tab app.

Context:
We have a URL for a WAV file downloading in our Tab app. It is placed at a element.
This URL depends on cookies to do authorization on the backend side. The cookies are produced in our Tab after account logged in.

It works fine in the classic Teams client.

But it is not working when opening this URL in the new Teams Client. From what we checked it seems that the new Teams client handles the URL in a new window (or session or something), and the cookie produced in our main tab cannot be used.

Can someone help to investigate?

Thanks

[Meghana-MSFT]

@kafka-yu - Could you please provide the repro steps or minimal code snippet/reference doc which you followed. Please share repro video as well.

[kafka-yu]

@Meghana-MSFT Ok. I'll try to build one.

[kafka-yu]

hi @Meghana-MSFT
pls check out this repo https://github.com/kafka-yu/teams-simple-download/tree/main

[Meghana-MSFT]

@kafka-yu - This issue seems similar to the one reported here MicrosoftDocs/msteams-docs#10342. We already have a bug raised for this issue.

[kafka-yu]

Thanks for sharing that! @Meghana-MSFT

[ceeyangwen]

Hi, @Meghana-MSFT , I discussed with @kafka-yu and found the issue is more like this one MicrosoftDocs/msteams-docs#10334. When Downloading file in Tab app within Teams, it look like opening another browser but not same browser as Tab app. This download link require access cookie, and the cross browser won't access the cookie in Tab app.

[kafka-yu]

hi @Meghana-MSFT Can you please double check this via @ceeyangwen's comment?
We are still facing this issue, and our customers using our MS Teams app are escalating this daily.
Thank you!