Editar o arquivo do Excel abriu diretamente
try
{
xlApp = (Excel.Application)System.Runtime.InteropServices.Marshal.GetActiveObject("Excel.Application");
}
catch (Exception ex)
{
if (ex.ToString().Contains("0x800401E3 (MK_E_UNAVAILABLE)"))
{
xlApp = new Excel.Application();
}
else
{
throw;
}
}
Embarrassed Eel