The strange case of sporadic COMException 0x800A01A8 calling CommandBarButton.Delete from a Visual Studio add-in

January 20, 2009

I don’t have an answer to this strange case, but after 4+ years getting reports from users, I will write about it just in case someone can post a solution. When using a temporary user interface (not a permanent one), add-ins typically add CommandBarButtons to commandbars using Command.AddControl when loaded. When the add-in is unloaded, […]