How to fix the Microsoft Teams missing Add-In on Outlook

On this video, I describe the steps needed to take in order to fix the Teams missing add-in on Outlook.
Suitable for both Windows 10 and 11.
It is the same for Outlook 2016, 2019, 365 and 365 Enterprise

Windows File Explorer shortcut
%LocalAppData%\Microsoft\TeamsMeetingAddin

Regedit Steps
1. Launch RegEdit.exe
2. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins
Verify TeamsAddin.FastConnect exists.
Within TeamsAddin.FastConnect, verify LoadBehavior exists and is set to 3.
If LoadBehavior has a value other than 3, change it to 3 and restart Outlook.
If they're missing, then create them manually.

Reference:
https://docs.microsoft.com/en-us/microsoftteams/teams-add-in-for-outlook

Teams Web App link
https://teams.microsoft.com/

Fix for re-registering the DLL:
C:\WINDOWS\system32\regsvr32.exe /n /i:user "C:\Users\UserID\AppData\Local\Microsoft\TeamsMeetingAddin\1.0.20339.4\x64\Microsoft.Teams.AddinLoader.dll"

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#HowToFixTheTeamsMissingAddinOnOutlook #MicrosoftTeams #TeamsAddinOutlook

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