Missing Teams Outlook Add-in

By | August 5, 2017

On July 31, 2017 Microsoft announced the Teams Outlook add-in to schedule meetings: https://techcommunity.microsoft.com/t5/Microsoft-Teams-Blog/Now-available-Outlook-add-in-to-schedule-meetings-in-Microsoft/ba-p/71157

Excited to give this a run through its paces, I noticed Outlook was missing the Teams button under New Items and when creating a new Meeting.

Looking under Outlook Add-ins, I found no entries for Teams. Of course it couldn’t be as simple as enabling it…

Next was to follow some recommendations on how others resolved the Teams Add-in issue:

Basically I spent a day of uninstall / reinstall tag with multiple Office 365 accounts enabled for Teams and matching Outlook profiles. The end result was no different and the Add-in was still not listed.

If you right click the Teams system tray icon you can “Get logs”.

Each time Teams is launched the Outlook Add-in is checked and each time I received “Errorcode:2”, “meeting_addin_registration_failed”.

Sat Aug 05 2017 09:47:23 GMT-0600 (Mountain Daylight Time) <15912> -- info -- Silent update trigger set to false 
Sat Aug 05 2017 09:47:23 GMT-0600 (Mountain Daylight Time) <15912> -- info -- Current Outlook Version: 16 
Sat Aug 05 2017 09:47:23 GMT-0600 (Mountain Daylight Time) <15912> -- error -- Error in registering outlook meeting addin. Errorcode:2 
Sat Aug 05 2017 09:47:23 GMT-0600 (Mountain Daylight Time) <15912> -- event -- name: meeting_addin_registration_failed
result: 2

Attempting to be clever, I used Outlook’s COM Add-ins window and manually added Microsoft.Teams.AddinLoader.dll, which I found under %LocalAppData%\Microsoft\TeamsMeetingAddin. This didn’t work and no additional Add-in showed after clicking OK.

Next I installed Teams on a fresh PC and exported all the Registry Keys I could find referencing “TeamsAddin”:

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}]
@="FastConnect Class"

[HKEY_CLASSES_ROOT\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\InprocServer32]
@="C:\\Users\\admin\\AppData\\Local\\Microsoft\\TeamsMeetingAddin\\1.0.17186.2\\x64\\Microsoft.Teams.AddinLoader.dll"
"ThreadingModel"="Apartment"

[HKEY_CLASSES_ROOT\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\ProgID]
@="TeamsAddin.FastConnect.1"

[HKEY_CLASSES_ROOT\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\Programmable]

[HKEY_CLASSES_ROOT\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\TypeLib]
@="{C0529B10-073A-4754-9BB0-72325D80D122}"

[HKEY_CLASSES_ROOT\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\Version]
@="1.0"

[HKEY_CLASSES_ROOT\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\VersionIndependentProgID]
@="TeamsAddin.FastConnect"

[HKEY_CLASSES_ROOT\TeamsAddin.FastConnect]
@="FastConnect Class"

[HKEY_CLASSES_ROOT\TeamsAddin.FastConnect\CurVer]
@="TeamsAddin.FastConnect.1"

[HKEY_CLASSES_ROOT\TeamsAddin.FastConnect.1]
@="FastConnect Class"

[HKEY_CLASSES_ROOT\TeamsAddin.FastConnect.1\CLSID]
@="{19A6E644-14E6-4A60-B8D7-DD20610A871D}"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}]
@="FastConnect Class"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\InprocServer32]
@="C:\\Users\\admin\\AppData\\Local\\Microsoft\\TeamsMeetingAddin\\1.0.17186.2\\x86\\Microsoft.Teams.AddinLoader.dll"
"ThreadingModel"="Apartment"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\ProgID]
@="TeamsAddin.FastConnect.1"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\Programmable]

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\TypeLib]
@="{C0529B10-073A-4754-9BB0-72325D80D122}"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\Version]
@="1.0"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\VersionIndependentProgID]
@="TeamsAddin.FastConnect"

[HKEY_CURRENT_USER\Software\Classes\CLSID]

[HKEY_CURRENT_USER\Software\Classes\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}]
@="FastConnect Class"

[HKEY_CURRENT_USER\Software\Classes\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\InprocServer32]
@="C:\\Users\\admin\\AppData\\Local\\Microsoft\\TeamsMeetingAddin\\1.0.17186.2\\x64\\Microsoft.Teams.AddinLoader.dll"
"ThreadingModel"="Apartment"

[HKEY_CURRENT_USER\Software\Classes\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\ProgID]
@="TeamsAddin.FastConnect.1"

[HKEY_CURRENT_USER\Software\Classes\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\Programmable]

[HKEY_CURRENT_USER\Software\Classes\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\TypeLib]
@="{C0529B10-073A-4754-9BB0-72325D80D122}"

[HKEY_CURRENT_USER\Software\Classes\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\Version]
@="1.0"

[HKEY_CURRENT_USER\Software\Classes\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\VersionIndependentProgID]
@="TeamsAddin.FastConnect"

[HKEY_CURRENT_USER\Software\Classes\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}]
@="Connect Class"

[HKEY_CURRENT_USER\Software\Classes\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\InprocServer32]
@="C:\\Users\\admin\\AppData\\Local\\Microsoft\\TeamsMeetingAddin\\1.0.17186.2\\x64\\Microsoft.Teams.AddinLoader.dll"
"ThreadingModel"="Apartment"

[HKEY_CURRENT_USER\Software\Classes\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\ProgID]
@="TeamsAddin.Connect.1"

[HKEY_CURRENT_USER\Software\Classes\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\Programmable]

[HKEY_CURRENT_USER\Software\Classes\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\TypeLib]
@="{C0529B10-073A-4754-9BB0-72325D80D122}"

[HKEY_CURRENT_USER\Software\Classes\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\Version]
@="1.0"

[HKEY_CURRENT_USER\Software\Classes\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\VersionIndependentProgID]
@="TeamsAddin.Connect"

[HKEY_CURRENT_USER\Software\Classes\TeamsAddin.FastConnect]
@="FastConnect Class"

[HKEY_CURRENT_USER\Software\Classes\TeamsAddin.FastConnect\CurVer]
@="TeamsAddin.FastConnect.1"

[HKEY_CURRENT_USER\Software\Classes\TeamsAddin.FastConnect.1]
@="FastConnect Class"

[HKEY_CURRENT_USER\Software\Classes\TeamsAddin.FastConnect.1\CLSID]
@="{19A6E644-14E6-4A60-B8D7-DD20610A871D}"

[HKEY_CURRENT_USER\Software\Classes\TeamsAddin.Connect]
@="Connect Class"

[HKEY_CURRENT_USER\Software\Classes\TeamsAddin.Connect\CurVer]
@="TeamsAddin.Connect.1"

[HKEY_CURRENT_USER\Software\Classes\TeamsAddin.Connect.1]
@="Connect Class"

[HKEY_CURRENT_USER\Software\Classes\TeamsAddin.Connect.1\CLSID]
@="{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID]

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}]
@="FastConnect Class"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\InprocServer32]
@="C:\\Users\\admin\\AppData\\Local\\Microsoft\\TeamsMeetingAddin\\1.0.17186.2\\x86\\Microsoft.Teams.AddinLoader.dll"
"ThreadingModel"="Apartment"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\ProgID]
@="TeamsAddin.FastConnect.1"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\Programmable]

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\TypeLib]
@="{C0529B10-073A-4754-9BB0-72325D80D122}"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\Version]
@="1.0"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D}\VersionIndependentProgID]
@="TeamsAddin.FastConnect"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}]
@="Connect Class"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\InprocServer32]
@="C:\\Users\\admin\\AppData\\Local\\Microsoft\\TeamsMeetingAddin\\1.0.17186.2\\x86\\Microsoft.Teams.AddinLoader.dll"
"ThreadingModel"="Apartment"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\ProgID]
@="TeamsAddin.Connect.1"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\Programmable]

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\TypeLib]
@="{C0529B10-073A-4754-9BB0-72325D80D122}"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\Version]
@="1.0"

[HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\VersionIndependentProgID]
@="TeamsAddin.Connect"

[HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\Resiliency\DoNotDisableAddinList]
"TeamsAddin.Connect"=dword:00000001

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Resiliency\DoNotDisableAddinList]
"TeamsAddin.Connect"=dword:00000001

[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

[HKEY_CLASSES_ROOT\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}]
@="Connect Class"

[HKEY_CLASSES_ROOT\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\InprocServer32]
@="C:\\Users\\admin\\AppData\\Local\\Microsoft\\TeamsMeetingAddin\\1.0.17186.2\\x64\\Microsoft.Teams.AddinLoader.dll"
"ThreadingModel"="Apartment"

[HKEY_CLASSES_ROOT\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\ProgID]
@="TeamsAddin.Connect.1"

[HKEY_CLASSES_ROOT\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\Programmable]

[HKEY_CLASSES_ROOT\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\TypeLib]
@="{C0529B10-073A-4754-9BB0-72325D80D122}"

[HKEY_CLASSES_ROOT\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\Version]
@="1.0"

[HKEY_CLASSES_ROOT\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\VersionIndependentProgID]
@="TeamsAddin.Connect"

[HKEY_CLASSES_ROOT\TeamsAddin.Connect]
@="Connect Class"

[HKEY_CLASSES_ROOT\TeamsAddin.Connect\CurVer]
@="TeamsAddin.Connect.1"

[HKEY_CLASSES_ROOT\TeamsAddin.Connect.1]
@="Connect Class"

[HKEY_CLASSES_ROOT\TeamsAddin.Connect.1\CLSID]
@="{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}]
@="Connect Class"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\InprocServer32]
@="C:\\Users\\admin\\AppData\\Local\\Microsoft\\TeamsMeetingAddin\\1.0.17186.2\\x86\\Microsoft.Teams.AddinLoader.dll"
"ThreadingModel"="Apartment"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\ProgID]
@="TeamsAddin.Connect.1"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\Programmable]

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\TypeLib]
@="{C0529B10-073A-4754-9BB0-72325D80D122}"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\Version]
@="1.0"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{CB965DF1-B8EA-49C7-BDAD-5457FDC1BF92}\VersionIndependentProgID]
@="TeamsAddin.Connect"

Download: TeamsAddin Registry keys (Use at your own risk, update the DLL paths, version and always backup your Registry before importing).

After manually importing the Teams Add-in Registry keys, the Teams client no longer reported an error and was showing success.

Sat Aug 05 2017 13:18:44 GMT-0600 (Mountain Daylight Time) <10432> -- info -- Silent update trigger set to false 
Sat Aug 05 2017 13:18:44 GMT-0600 (Mountain Daylight Time) <10432> -- info -- Current Outlook Version: 16 
Sat Aug 05 2017 13:18:44 GMT-0600 (Mountain Daylight Time) <10432> -- info -- Outlook meeting addin registered success 
Sat Aug 05 2017 13:18:44 GMT-0600 (Mountain Daylight Time) <10432> -- info -- Setting logged out state to false 
Sat Aug 05 2017 13:18:44 GMT-0600 (Mountain Daylight Time) <10432> -- info -- App initialized, enabling close to minimize. 
Sat Aug 05 2017 13:18:44 GMT-0600 (Mountain Daylight Time) <10432> -- event -- status: success

After opening Outlook, I still didn’t see the Teams buttons but now the Teams Add-in was listed under Inactive!

Attempting to enable the Teams Add-in from the COM Add-ins resulted in “Not loaded. A runtime error occurred during the loading of the COM Add-in”.

Looking at the System Event Logs, every time Outlook was launched I received two Error events with Event ID: “10016” and Error: “The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID”. This ended up being a permission whack-a-mole for about an hour with no progress.

Out of ideas, I went into Internet Explorer’s Internet Options, Security and clicked “Reset all zones to default level”. Now going into Outlook I was able to enable the Teams Add-in and was greeted with “Load at Startup”.

Success! Teams buttons visible and functioning.

8 thoughts on “Missing Teams Outlook Add-in

    1. mlamontagne Post author

      I believe this is impacting a subset of users that had the Outlook Add-in earlier this year and an update removed or replaced it causing the issue going forward on those PCs.

      Reply
  1. Richard Catterill

    Thanks for this – I’d literally been through every step you did before I came across your article! Working well now thanks to the reg changes!

    Reply
  2. ToniM

    Thank you so much for this! It finally appears under COM add-ins. The issue is that I cannot get it to appear in my Outlook ribbon. It is not listed under File > Options > Customize Ribbon > Commands Not in the Ribbon either. Anybody has an idea why this is happening?

    Thanks!

    Reply
  3. Jeff Schertz

    This process worked for a coworkers newly installed PC as well. One thing to point out though is you’ll need to edit the .reg file (whether it comes from this page or a fresh install) and update the path to the .dll. Pay special attention to the user’s directory name and the version of the client.

    Reply
  4. Olivier

    Also make sure you point to the right folder. In this reg file it point to \1.0.17186.2\ on my PC the folder was \1.0.17306.2\ so check that also in addition to the user name
    But that solved the problem for me, thank you !

    Reply
  5. lozer

    The following should fix the issue from CMD:

    %SystemRoot%\System32\regsvr32.exe /n /i:user %LocalAppData%\Microsoft\TeamsMeetingAddin\1.0.18012.2\x64\Microsoft.Teams.AddinLoader.dll

    %SystemRoot%\SysWOW64\regsvr32.exe /n /i:user %LocalAppData%\Microsoft\TeamsMeetingAddin\1.0.18012.2\x86\Microsoft.Teams.AddinLoader.dll

    Reply

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