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Microsoft Teams Prompt Authentication

Recently deployed MWG in our environment. And tested a few pilot users and we encountered this issue which it will randomly prompt us this Microsoft teams authentication. I wonder why it will prompt this and how can I stop having this authentication? please advise!

Below is a screenshot of the authentication prompt,

WhatsApp Image 2021-11-03 at 10.38.47 PM.jpeg

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McAfee Employee
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Re: Microsoft Teams Prompt Authentication


are the "Bypass Office 365" rule sets enabled, to prevent MWG from filtering?

You can run a rule engine trace for this specific client IP. Then check what Request is answered with the "Authenticate" action, so we know which call causes the popup to occur. When we can find out why it does not authenticate and how to authenticate/whitelist it properly.


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