Microsoft has announced the public preview roll-out of end-to-end encryption support for one-to-one Microsoft Teams calls.

Starting today, Microsoft Teams is getting end-to-end encryption for 1:1 calls which encrypts the real-time media flow so that private one-to-one discussions remain entirely private, with no way for intermediate nodes or parties to decrypt them.

“We’re rolling out this preview of E2EE for unscheduled one-to-one calls today. When both parties in a one-to-one call turn on E2EE, the communication between those two parties in the call is encrypted from end-to-end. No other party, including Microsoft, has access to the decrypted conversation,” said Mansoor Malik, Principal Group Product Manager for Microsoft Teams.

Encryption for chat, file sharing, presence, and other content in the calls is also available for Microsoft 365 users.

While end-to-end encryption for 1:1 Microsoft Teams calls is disabled by default, IT admins will be able to toggle it on for their entire organizations or only for a specific user group.

Further information on how 1:1 calls are end-to-end encrypted and what Teams features aren’t available when end-to-end encryption is turned on can be found in Malik’s blog post.