ODBC error 193 usually indicates a mixing of 64-bit and 32-bit drivers and applications. Microsoft Excel is available in both 32-bit and 64-bit versions and a 64-bit version of Windows will run them both. If you have the 32-bit version of Excel installed, you will need the 32-bit Snowflake driver and need to use the 32-bit version of the ODBC Data Source Administrator to create your DSN.  Likewise, if you have the 64-bit version of Excel installed, you will need the 64-bit version of the driver and ODBC Data Source Administrator. Make sure the driver and ODBC Data Source Administrator application match the architecture of the version of Excel you are using.