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Use end-to-end encryption for Teams meetings

Note: End-to-end encryption is available as part of the preview release of Teams Premium, an add-on license that provides additional features to make Teams meetings more personalized, intelligent, and secure. To get access to Teams Premium, contact your IT admin.

For meetings that require heightened confidentiality, end-to-end encryption (E2EE) is an extra layer of security that encrypts data at its origin and decrypts it at its destination.

Only audio, video, and video-based screen sharing is end-to-end encrypted. Apps, avatars, reactions, chat, filters, and Q&A are not end-to-end encrypted.  

If your IT admin has enabled end-to-end encryption for your organization, you can use it to further increase the confidentiality of your meetings. 

Pre-requisites for joining an end-to-end encrypted meeting: 

  • The meeting organizer must turn on end-to-end encryption before the meeting begins.

  • Desktop (Windows and Mac) and mobile (iOS and Android) are supported. Channel meetings can also be end-to-end encrypted. Teams Rooms devices and Surface Hub support is coming soon.

  • Other platforms: Web, Virtual Desktop, Cloud Video Interoperability, and Android Teams Room devices are not currently supported. If trying to join from one of these platforms, you will be blocked from joining the end-to-end encrypted meeting.

  • Recording is not supported with end-to-end encryption.

  • Direct guest join is not supported with end-to-end encryption.

Notes: 

  • During an end-to-end encrypted meeting, features including recording, live captions, transcription, together mode, large meetings, large gallery view on desktop, and PSTN are not available.

  • An end-to-end encrypted meeting is limited to 50 participants.

  • An end-to-end encrypted meeting might take slightly longer to join.

Enable end-to-end encryption

  1. Go to your Outlook or Teams Calendar and select New meeting.

  2. Go to Meeting options.

  3. Turn on the Enable end-to-end Encryption toggle.

  4. Select Save.

  5. Enter the rest of your meeting details.

  6. Select Save to schedule.

End-to-end encryption in a meeting can only be turned on or off before it starts. To change encryption settings for a meeting you've already made, open it in your Teams Calendar and go to Meeting options

The first time you set up a meeting with end-to-end encryption, ensure you have the latest version of Teams. To get the latest version, see Update Microsoft Teams

Note: If you enable end-to-end encryption on one device, the setting will be synchronized across other supported devices.

Verify end-to-end encryption

To check whether your meeting is being encrypted successfully for both parties in the meeting, look for the encryption indicator (a symbol of a shield and lock) on your meeting screen. Hover over the indicator to see your meeting’s end-to-end encryption code and make sure the code is the same for both parties.

Enable end-to-end encryption

  1. Open your Teams mobile app.

  2. Go to Details > Meeting options.

  3. Enable end-to-end Encryption.

Verify end-to-end encryption

To check whether your meeting is being encrypted successfully for both parties in the meeting, look for the encryption indicator (a symbol of a shield and lock) on your meeting screen. Tap the indicator to see your meeting’s end-to-end encryption code and make sure the code is the same for both parties.

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