{"version":"2.1.321","anchor":"xlsx-asset-upload-warning","canonical_anchor":"xlsx-asset-upload-warning","heading":"Uploading an .xlsx file now warns that it limits sharing","tier":"notice","area":"Artifacts","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.321\/e\/xlsx-asset-upload-warning","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.321","markdown":"### Uploading an .xlsx file now warns that it limits sharing\n\nAfter an .xlsx upload, Claude is told the file is download-only and blocks making the artifact public or shared outside the org while stored\n\n**What**\n\nWhen Claude uploads an .xlsx spreadsheet as an asset for an artifact, the result it gets back now includes a warning. It says:\n\n- The file is only ever served as a download.\n\n- While a copy is stored, the artifact cannot be made public or shared outside your organisation, because the content scan cannot read .xlsx files.\n\n**Why**\n\nThe warning steers Claude to delete .xlsx assets once they are no longer needed, so a leftover spreadsheet does not quietly stop you from sharing the artifact.\n\n- Area: Artifacts\n- Tier: You'll notice\n- Useful: 2\/5\n- Signal: 2\/5\n- Scope: individual\n- Heads-up: no"}