There are hundreds of third-party addons available on web, some work seamlessly with Outlook 2010 while others can raise compatibility issues or cause deadlocks. This post covers how to disable/remove the Outlook 2010 add-in. To remove Outlook add-in, on File menu, click Options. It will open up Outlook Options dialog. From left sidebar, click Add-Ins. From main window, select an add-in and from bottom of window click Go.
This will bring up COM Add-Ins dialog, now from the list select the add-in and click Remove to uninstall the addin.