New Teams meeting add-in is missing from outlook

I had the same issue. I read through the posts and found the .dll was missing altogether after switching to the new Teams and new Outlook. I didn't catch this at first so I'm not sure which one I turned on first, but I did try to go back to the older Outlook which did not resolve the issue. Actually, I noticed my Salesforce add-in was missing in the old Outlook so I switched to the New Outlook again...lesser of two evils.

Then I noticed it. When you open a new Event there is a toggle switch to turn on Teams meeting.

So maybe we missed the memo on switching to the new versions. The functionality is there it's just "different".

Good luck. I hope this helps.

I have resolved following the steps outlined here Resolve issues with Teams Meeting add-in for Outlook - Microsoft Teams | Microsoft Learn starting from re-registering the Add-In DLL.

I make this all and it works now

Taskkill /F /IM outlook.exe

Taskkill /F /IM ms-teams.exe

xcopy G:\Support\Teams\TeamsMeetingAddin %LocalAppData%\Microsoft\TeamsMeetingAddin\*.* /S /Y

%SystemRoot%\System32\regsvr32.exe /n /i:user %LocalAppData%\Microsoft\TeamsMeetingAddin\1.23.28501\x64\Microsoft.Teams.AddinLoader.dll

reg add "HKCU\Software\Microsoft\Office\Outlook\Addins\TeamsAddin.FastConnect" /v LoadBehavior /t REG_DWORD /d 3 /f

1. Uninstall all browser downloaded or preinstalled versions.
2. Download and install Teams from the store.

I have been using NEW Teams since becoming available a month ago, my Teams Meeting plug-in disappeared this week.

1. I did not uninstall NEW Teams
2. I downloaded NEW Teams again
3. The prompt said I already had NEW Teams. When running the installer again, it said I required an update.
4. Plug-in works again, although "Teams Meeting" has been moved under the "New Items" action.

Thanks for the tip!

I have the same issue, but I think I know the cause, however I don't have a solution.

Our small business has it's domain hosted in WIX and the email provider is Google. All WIX DNS settings (MX records etc..) is pointing to Google. We have decided to invest in O365 so we have a business license and started using their apps. We decided to use Outlook and added our Google account as an IMAP/SMTP and emails are working. However, the 0365 acc has no record that emails should be coming through Google and therefore there is no sync with google calendar/mail when using web Outlook or MS Teams. Neither are linked to Google. In o65 admin it states our domain whereby DNS settings are managed by WIX and that an alias DOMAIN.onmicrosoft.com domain was created.

We want O365 to work seamlessly and have outlook app/web synced properly with Teams app/web.

How does one go about this migration activity? What would be the easiest way to do so without needing a company to support? It's worth noting, that we did plan to host our company website with a new provider (3rd party website company) and they have also agreed to host our mail so soon we will move off WIX & Google and the domain/website/mail will be hosted with them. This of course, does not fix the above issue. Any advice, will be useful, or please point me to a thread where I get help?