when I add a connection to a sql server database in an external content type from Sharepoint Designer 2013 I get this error:
Retrieving the COM class factory for component with CLSID {BDEADDF26....} failed due to the following error: 800703fa illegal operation attempted on a registry key that has been marked for deletion
I see that CLSID corresponds to
C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\ISAPI\OWSSVR.DLL
What's wrong?