How to: Uninstall a ClickOnce Office Solution
Document-level customizations and application-level add-ins are added to the list of the computer's installed programs during installation. This list is shown in Programs and Features in Windows 7, Windows Vista, and Windows Server 2008, and in Add or Remove Programs in Windows XP and Windows Server 2003.
Applies to: The information in this topic applies to document-level projects and application-level projects for Microsoft Office 2010 and the 2007 Microsoft Office system. For more information, see Features Available by Office Application and Project Type.
You can use this list to uninstall Office solutions the same way you uninstall other applications on the computer. However, Office solutions cannot be uninstalled through the add-ins in the Office application as described in Enable or disable add-ins in Office programs.
To uninstall a ClickOnce Office solution
Open the list of programs that are installed on your computer. You can open this list from Control Panel.
Select the customization or add-in you want to remove, and then click Remove or Uninstall.