How to fix when new connection dialog fails in Visual Studio 2015

  • Visual studio 2015
  • Close visual studio
  • eventvwr
  • check if any devenv error(s) in Application like
  • The data source '{7931728a-ebfb-4677-ad6b-995e29aa15c2}' specifies no supporting providers or a set that are not registered.
  • regedit
  • HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\14.0_Config\DataProviders\
  • Delete the key(s) that referred to the faulty data provider above
  • eg. npgsql
  • npgsql uninstaller leaves the registry information which causes this error...
  • cf. http://stackoverflow.com/questions/8217115/new-connection-fails-during-add-new-data-source-dialog

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