Missing Microsoft Teams Outlook Scheduling Add-in

January 31st, 2019 | Tags:

So apparently I’m not alone here. One day you can be happily scheduling Microsoft Teams meetings to your heart’s content and the next the add-in just vanishes into thin air. Whilst I don’t know why this happens I have a solution I’d like to add to the existing repertoire of blog posts within the wild.

The most informative post, that extends beyond the basic troubleshooting is one from fellow MVP Michael LaMontagne, in this post he shares registry settings from a PC where the add-in is loading successfully. This approach did work for me, but I also identified a vastly reduced set of registry settings that seemed (for me anyways) to resolve my issue.

The issue in my case was that Outlook no longer loaded this add-in or gave me the option to add it. When I looked within the registry I found that the add-in didn’t have a key at all when I looked at:

Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins\

Shouldn’t there be a key called TeamsAddin.Connect here?

So I manually created the key by adding the following to a text file (renaming the extension from .txt to .reg)

Windows Registry Editor Version 5.00


[HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins\TeamsAddin.Connect]
“Description”=”Microsoft Teams Meeting Add-in for Microsoft Office”
“FriendlyName”=”Microsoft Teams Meeting Add-in for Microsoft Office”
“LoadBehavior”=dword:00000003

After importing this, I re-started Outlook and voila – the add-in had returned!