Bypass the Teams Lobby

Microsoft Teams has several different host settings that will let participants with different roles bypass the waiting room.

There isn't one solution to make a Teams bot skip the waiting room for all meetings but below outlines the conditions that would allow a bot to bypass the waiting room for each setting:

Everyone - the bot can skip the waiting room without conditions
Everyone in my org, trusted orgs, and guests - the bot needs to be signed into a Microsoft Teams account, where:
- The bot's email belongs to the same Microsoft tenant as the host's tenant
- The bot's email domain is added as a trusted tenant in the host's Microsoft Teams tenant
- The bot's email has been added as a guest in the host's Microsoft Teams tenant
People in my org and guests - the bot needs to be signed into a Microsoft Teams account, where:
- The bot email belongs to the same Microsoft tenant as the host's tenant
- The bot's email has been added as a guest in the host's Microsoft Teams tenant
People in my org - the bot needs to be signed into a Microsoft Teams account, where the bot's email belongs to the same Microsoft tenant as the host's tenant
People who were invited - the bot needs to be signed into a Microsoft Teams account, where the bot's email has been added to the calendar invite
Only organizers and co-organizers - the bot needs to be signed into a Microsoft Teams account, where the bot's account has been added as a co-organizer

To authenticate a teams bot, see the Signed-In Microsoft Teams Bots guide.

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There isn't a single solution to make a bot skip the waiting room for all teams meetings
The default setting is People in my org and guests so your bot will need to be signed into the same account as the host's org for the majority of meetings

The recommended solution is to:

Have the host set the lobby settings to Everyone
Have the host set the lobby settings to People who were invited, have the bot sign into an account, and to add the bot's email added to the calendar invite