Basically trying to interact with a third-party OfficeApp (defined via an XML manifest) in Excel using VBA. More specifically it is an a TaskPaneApp with a clickable icon to launch.
I have tried for a while now but couldn't figure it out. Accessing Application.CommandBars, Application.AddIns, Application.AddIns2 and Application.COMADDIns doesn't seem to work. Googling doesn't give any hints either. Does anyone know if this is possible?