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Allow external guests to join Teams meetings without a Microsoft account
How to configureTeams admin settings to allow external guests to join Teams meetings without a Microsoft work or school account.
Microsoft Teams meeting security settings
The most secure setting for Teams is to not allow external people or anonymous users to join meetings. But, this doesn't really work if you want to collaborate with people who don't already use Office 365.
In some cases, you'll want to schedule meetings and calls with external people who don't have a Microsoft work or school account.
If you're not signed in to a Teams (work or school) account, sign in and try joining again.
External users will get this message if you have turned off "Anonymous users can join a meeting" in the Teams admin settings
If you're not signed in to a Teams (work or school) account, sign in and try joining again.
Microsoft Teams Secure score
If you've been reviewing your Office 365 secure score rating and implementing the recommended actions for, you might have changed some of these settings for Teams.
If any of these settings don't work for your organization, you can change the status to "Risk accepted"
Microsoft Secure Score settings for Teams
You might want to not implement this and instead configure Teams to allow everyone to present, which is better for collaboration
- Configure which users are allowed to present in Teams meetings
These other Secure score recommended actions for Teams should all be implemented:
- Turn on Microsoft Defender for Office 365 in SharePoint, OneDrive, and Microsoft Teams
- Only invited users should be automatically admitted to Teams meetings
- Restrict anonymous users from starting Teams meetings
- Limit external participants from having control in a Teams meeting
Teams admin settings to allow external guests to join meetings
The following settings will allow external users to join Teams meetings without signing into a Microsoft account, but they will need to wait in the lobby and be admitted by the meeting organizer.
Changes to Teams meeting policies and settings can take 3-4 hours to take effect
1. Open the Teams admin center
Microsoft Teams admin center
https://admin.teams.microsoft.com
2. Meeting settings
Meetings - Meeting settings
Participants
Anonymous users can join a meeting: On
3. Meeting policies
Meetings - Meeting policies
Global (Org-wide default) policy
Meeting join & lobby
Anonymous users can join a meeting: On
Who can bypass the lobby: People who were invited
When I tested this, external guests who were included in the meeting invite still had to wait in the lobby. Even though the option to allow people who were invited to bypass the lobby was set.
Content sharing
Who can present: Everyone
Join Teams meetings online as a guest
To join a Teams meeting online without a Microsoft account, external users will need to open the Teams invite using a web browser and join the meeting as a guest.
Joining a meeting using the Teams app means you'll have to sign in with a Microsoft account
References:
by Author
Manage anonymous participant access to Teams meetings (IT admins)
https://learn.microsoft.com/en-us/microsoftteams/anonymous-users-in-meetings
External participants receive "Sign in to Teams to join, or contact the meeting organizer"
https://learn.microsoft.com/en-us/microsoftteams/troubleshoot/meetings/external-participants-join-meeting-blocked
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