‘DbProviderFactories’ section can only appear once per config file error’ – MS SQL DTS wizard
ENGLISH I had this problem after few months of using SQL Express 2012. At start of Import and Export data (DTSWizard) I got this error. At first I uninstalled SQL and reinstalled it again but the error was still here. After some “googling” I found the sollution. The problem lies in installation of Visual Studio…