Microsoft Teams and Outlook, both part of the Microsoft 365 suite of tools, are essential tools in today’s collaborative workspaces. However, sometimes the New Teams Meeting add-in button might not be visible or gone completely missing from your options in Outlook desktop client, hampering the smooth functioning of virtual meetings. In this article, we provide a detailed guide on the solution to this issue.
Possible Issue for Missing Microsoft Teams Button: Disabled Teams Meeting Add-in on Microsoft Outlook App

The Teams Meeting add-in getting disabled in your Microsoft Outlook app is a common reason for it not showing up. The Teams and Outlook product teams are actively fixing issues that cause Outlook to disable the Teams Meeting add-in due to various performance reasons. Moreover, instant fixes are incorporated into the most recent builds.
Solution: Re-enable the Microsoft Teams Add-in to Restore the Missing Meeting Button

To restore and see the missing Teams Meeting option again, you need to re-activate the add-in in your Microsoft Outlook client. Follow these steps:
- In the Outlook Desktop app, click on File > Manage COM Add-ins.
- Expand the options for the Microsoft Teams Meeting Add-in for Microsoft Office.
- Select the ‘Do not monitor this add-in for the next 30 days’ option. If this option doesn’t show, select ‘Always enable this add-in’ instead.
- Hit ‘Apply’ and then ‘Close.’
If the Teams Meeting add-in isn’t restored, you can re-enable it using the ‘Disabled Items’ dialog.
- Go to File > Options > Add-ins > Manage in Outlook.
- Select ‘Disabled Items’ and click on ‘Go’.
- If Teams is under ‘Disabled Items,’ select it and hit ‘Enable.’
- Restart Outlook and confirm if the add-in is functioning correctly.
Preventive Measure: Add a Registry Key
To avert the Teams Meeting add-in’s disabling by Outlook, add a registry key by following these steps:
- Open the Registry Editor on your computer.
- Navigate to this path: Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Resiliency\DoNotDisableAddinList.
- Create a new DWORD (32-bit) value and name it ‘TeamsAddin.FastConnect’.
- Assign a value of ‘1’ to ‘TeamsAddin.FastConnect’.
Other Ways to Avoid Getting Similar Problem in the Future
Verify System Requirements
Following Microsoft’s recent announcement, .Net 4.8 and WebView2 are essential for the Teams Meeting add-in in Outlook. Remember to update to .Net 4.8 and WebView2 to prevent a degraded Outlook experience.
Confirm Installation of .Net 4.8 and WebView2
If the add-in issue persists, you may need to confirm if .Net 4.8 and WebView2 are installed. If not, installing them has resolved the issue in some cases.
To confirm the .Net 4.8 installation:
- Open Registry Editor and go to this key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full.
- If the ‘Full’ subkey is absent, .NET Framework 4.5 or a later version is also absent.
- Look for a REG_DWORD named ‘Release.’ If it exists, then .NET Framework 4.5 or later is installed. The value of ‘Release’ corresponds to a particular .NET Framework version.
- To confirm the WebView2 installation, check for an entry for Microsoft Edge WebView2 Runtime under Control Panel > Programs > Programs and Features right after installation.
By following these steps, the Microsoft Teams Meeting add-in should now be visible and functioning in Outlook.