You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
ImprovementsKind: in v2.1.321,
ImprovementsSection of the release
What
An artifact is a piece of content, such as a document or spreadsheet, that Claude Code creates and stores so it can be viewed or shared. Before, a failed upload of an Excel spreadsheet (an .xlsx file) to an artifact showed only the plain error.
The error now adds a note. Every stored copy of an .xlsx keeps the artifact from being made public or shared outside your organization, so you should delete the extra copies.
Why
Retrying a failed upload can leave stray copies behind. Those copies quietly stop you from sharing the artifact, and the note tells you to clean them up.
