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[fileorbis]

I developed an application for Microsoft Teams with .Net Core 3.1.

I manage the session with Cookie. Session cookies work smoothly in mobile, tablet and Windows applications but session cookies are deleted at https://teams.microsoft.com. So I can't login

how can i solve this problem?

[#2]

@fileorbis 

@Steven Collier  - can you assist here?

[#3]

Teams desktop does preserve cookies, so you must be missing something. You auth will fetch a token, you store this token within a session of your application.

Not sure what else you mean