>>Hi Borislav,
>>
>>It's general bug for ODBC driver "Microsoft Excel Driver (*.xls)" and OLEDB driver "Microsoft.Jet.OLEDB.4.0" after last security updates.
>>Use ODBC driver "Microsoft Excel driver (*.xls, *.xlsx, *.xlsm, *.xlsb)"
>>
>>MartinaJ
>
>Thank you Martina,
>
>That means all clients have to install Microsoft.ACE.OLEDB.12.0 :-(

Yes, but you can read xls and xlsx.
Or your customers can waits to next security update from MS.

Miss Martina Jindrová