This was already answered on https://stackoverflow.com/questions/78946615/difference-between-apache-poi-3-17-and-4-0-0-versions-regarding-excel-file-reco
On Thursday 5 September 2024 at 03:37:42 IST, 노은석 <[email protected]> wrote: Hello, I would like to understand the differences between Apache POI version 3.17 and versions after 4.0.0. The reason for asking is that when an `.xlsx` file generated with versions after 4.0.0 is uploaded to Slack, it is not recognized as an Excel file. However, files generated with version 3.17 are correctly recognized as Excel files. What could be causing this difference? Thank you! --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
