Even if you have previously added the Teams Meeting Add-in to Outlook, it may not be working now. But it is easy to re-enable:
- From within the Outlook Calendar View, click on File.
- Click on Options.
- Click on Add-ins.

- Scroll down to see Disabled Application Add-ins. If Microsoft Teams Meeting Add-in for Microsoft Office is listed, you must add it back in.
- At the bottom of the add-ins screen next to Manage, click the drop-down and change to Disabled Items, and then click Go.
- Click on the disabled Teams add-in and then click Enable.
- Restart Outlook.
- You should now see New Teams Meeting when you are in Calendar View.

- You should now see Teams Meeting when you try to schedule a meeting.
- If you do not see Teams Meetings, you may receive the following message.
- Click View More Details.
- Click Options.
- Select Do not monitor this add-in for the next 30 days.