A client gets this error after having upgraded an old Windows 2008R2 server to Windows 2012:The following ODBC error occurred:
Error: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified"
We have found several threads suggesting to re-install the Native Client for SQL, but that didn't help.
The ODBC drivers look like this:
I am guessing it might be the old SQL Native Client version 2005.x causing problems. Seems like a leftover.
Could this be the problem?
How do we correctly un-install / un-register this old driver?