Running Office 2010 and PowerPivot on Windows 7 32-bit. Have Oracle 11g client and tnsnames file. Have two ODBC connections configured and working. When creating a new PowerPivot file, the ODBC connections work fine until I open an existing PowerPivot file, possibly with a cached ODBC connection.
Once I open the existing file, it fails to use the existing ODBC connection or resolve the tnsnames instances as if it cannot see the TNSnames file. Opening new PowerPivot files now fail as well. A tnsping to the ODBC instance responds correctly. Wondering if there is a way to check or clear this within Excel or the existing PowerPivot file as it is now affecting all PowerPivot files.
Fuel