On Fri, 2024-10-11 at 10:30 +0000, PJ Fanning wrote: > The SXSSF default is Zip64Mode.Always.
Greetings, we have migrated everything to Zip64Mode [1] AlwaysWithCompatibility [2] and this has solved our problem entirely. On the LibreOffice side nobody responded yet, so maybe it is safe and sound to switch POI's default Zip64Mode? Warm regards Andreas [1] Zip64Mode https://commons.apache.org/proper/commons-compress/apidocs/org/apache/commons/compress/archivers/zip/Zip64Mode.html [2] AlwaysWithCompatibility https://commons.apache.org/proper/commons-compress/apidocs/src-html/org/apache/commons/compress/archivers/zip/Zip64Mode.html#line-50