Microsoft Teams: Now your video calls support end-to-end encryption

Microsoft has rolled out a public preview of E2EE for one-to-one Teams calls, bringing its enterprise platform up to par with Facebook’s consumer apps, WhatsApp and Messenger. 

Microsoft announced the encryption feature was in the works in March at Ignite Spring 2021. E2EE means that neither Microsoft, nor anyone else can access the decrypted contents of a one-to-one call. Facebook in August rolled out E2EE for audio and video calls on its Messenger app.    

Enabling E2EE for Teams calls requires work from both end users and IT admins, whom need to enable it for their users. 

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E2EE works by encrypting information from one point to an intended destination and prevents anyone else from decrypting the transmission. 

Microsoft notes in a blogpost that real-time video and voice data is protected by E2EE and that both parties need to enable the setting. It doesn’t cover things like chat or file-sharing, which are protected at rest and in-transit by other encryption protocols like HTTPS for secure connections between a device and a website.

To allow this feature, admins need to enable Enhanced Encryption policies for Teams users. Admins

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