Remove MS Outlook Addin

1. In MS Outlook, goto Tool >> Trust Center >> Add-ins >> select the addin >> click Go button >> uncheck / remove the addin
2. In MS Outlook, right click the toolbar >> Customize >> tab Toolbars >> delete the addin toolbar
3. Uninstall the addin
4. Run cmd, type: echo %appdata%
==> go to %appdata% folder
==> delete folder like addin name

==> delete / rename file extend.dat in Miscrosoft/Office/Outlok if any

5. Restart MS Outlook