https://bz.apache.org/bugzilla/show_bug.cgi?id=58616
--- Comment #3 from Dominik Stadler <dominik.stad...@gmx.at> --- This exception indicates that the file that you try to process is not an actual xlsx-file. The XLSX-Formatted files are actually zip-files with XML-files inside. Can you check if this is the case? Maybe you actually have an .xls (older Excel file format) file that has an incorrect file extension? -- You are receiving this mail because: You are the assignee for the bug. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@poi.apache.org For additional commands, e-mail: dev-h...@poi.apache.org