With New Teams multi-tenant, multi-account support Teams gained the ability to switch to the correct account automatically when joining a meeting. For those of us who use mutliple accounts and attend meetings in partner organisation tenants, this support is invaluable.
However, there has been a change and whilst the main sign in account is still chosen automatically to match the account invited to the meeting, if you have a guest account in the host tenant that is no longer selected automatically. If you are an attending NDA meetings with Microsoft they now require you to join with your guest account and this change does seem to be causing some issues for people attending such meetings.
To join with a guest account the process is now as follows:
- Do NOT tenant switch to your guest account before joining the meeting
- When joining the meeting the account will be shown at the top of the meeting join screen click the Change button, next to the sign in account which is shown at the top of the meeting join screen (highlighted by red box in the screen shot below)
- In the Change account or org box choose the required guest account rather than the main account. In the example below this needed to be Microsoft (highlighted by the blue box in the screenshot below)
- Once you have selected your desired account, the Change account or org box will close and your meeting join window will reload.
- When you choose a guest account within the same sign in account, the account displayed at the top of the meeting join screen will not update, it remains as the sign in account. However you should notice the tenant you are a guest in shows at the top right of the meeting join window, next to your user icon.
- You can now select your chosen camera and audio settings as normal and join the meeting.
Meeting Set Up Tip: Always check the meeting options when setting up your meetings to ensure your meeting lobby is configured as desired and remember that meeting participants who have presenter role can admit users from the lobby by default. If you are configuring meetings where users need to join with a guest account in your tenant, you may need to configure the meetings to ensure the appropriate people have presenter rights so that you limit who can admit people from the lobby.
For more on Teams meeting roles see https://support.microsoft.com/en-us/office/roles-in-microsoft-teams-meetings-c16fa7d0-1666-4dde-8686-0a0bfe16e019 and also learn about the option for tenant administrators to limit the presenter role across all meetings in your tenant. https://learn.microsoft.com/microsoftteams/presenter-role-reduction?WT.mc_id=M365-MVP-5004583
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