User753101303 posted
Hi,
It seems OleDb can't even, retrieve an actual error message. The file does exists, is not password protected, is not blocked by an antivirus software ? I would perhaps try with a dead simple XLSX file to see what happens. If ok, I would add a macro and save
to XLSM to see once again what happens with this simple file.
I'm trying to understand if this is a problem on the web server side or if the problem could be caused by this particular XLSM file.
Edit: try maybe to drop the final ; in case the connection string parser would expect then Something following this final separator ???