Missing Teams Add-In for Microsoft Outlook

Earlier this year we received a new customer where they wanted to migrate every user to a new O365-environment.
After this I received multiple tickets from users who’s Teams Add-in did not show up In their Outlook application.

After countless of tries mixing different settings, new profiles and searching high and low on the interweb, I still couldn’t get the add-in to show.

I then stumbled across a regedit command line that solved this temporary(until Teams receives a new update).

  1. Open Run and type In the following command line in the search box:
    1. This command line will open the regedit-utility to add the .dll-file.  /n points out the .dll file we want to enable (Microsoft.Teams.AddinLoader). /i marks that we’re adding this on a user level.

      Note that the version number(1.0.20031.2) may vary and you may have the change this depending on the version you’re running.

    2. Restart your computer.
    3. Open up your Outlook and head over to File > Options > Add-ins and press Go…

    4. Verify that you can see the Teams Add-in for Microsoft Office and that the box Is checked and press OK.
    5. You might have to restart your Outlook for this to take effect.
    6. The Add-in should now be installed and the Teams icon should now appear In your Outlook client.

As mentioned above, this Is a temporary solution until the application Is updated. For the best usage, always keep your Teams client up-to-date.
To read more about Microsoft Teams. visit their page: https://teams.microsoft.com/

Hopefully this will save you some time looking for other solutions and make the Add-In work as intended!

Disclaimer: All information on this blog is offered "as is" with no warranty. It is strongly recommended that you verify all information and validate all scripts in isolated test environments before using them in production environments.