After installing TeamViewer, I now have an Add-In installed in Outlook, which, supposedly, lets me create new TeamViewer meetings.
I never wanted to have that Add-In and now I want to get rid of it. Sadly, I can't find how.
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The easiest way is probably to do it through TeamViewer.
Start TeamViewer and open the Options.
Go to the Advanced section and click Show advanced options.
Near the bottom of the panel, you'll find a button labeled Deactivate Outlook Add-In. Click it to deactivate the Add-In.
Go to File → Options.
Go to the Add-Ins section.
At the bottom of the dialog, select COM-Add-Ins from the dropdown and click the Go button.
Uncheck the TeamViewer Meeting Add-In to deactivate it for your user account.
There are better options than just disabling the add-in/plug-in.
TeamViewer setup does provide an option to not use Outlook add-in under "Advanced Settings", but that still installs the add-in in disabled state. I wish they had chosen not to install it at all when user does not want it.
If you're using the Teamviewer .MSI version (if you have a corporate license), please add the following registry key to your .reg file to disable the Outlook Plug-in during the MSI deployment: (This might require access to the original installer for the add-in.)
Unfortunately, the keys generated by TeamViewer interface don't include these to disable the add-on on deployment; therefore, the above mentioned method is required.
I got this info from Teamviewer support a long time ago (we also have this disabled enterprise-wide) and can confirm this works.