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Sweep 27 Oct 2026 · 19:04Z Build v2.1.312 531 read Stable v2.1.308 Latest v2.1.312 Next v2.1.312 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.312 ·

Error results now include the reason startup failed

When Claude Code returns an error result, the error now carries the last recorded reason startup failed

You'll notice Improvements
JSON All of v2.1.312
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
SDKArea: what it touches
ImprovementsKind: in v2.1.312,
ImprovementsSection of the release
What

The "Claude Code returned an error result" error now includes a startup failure reason, taken from the most recent reason Claude Code recorded for a failed start.

Why

When a run fails because Claude Code could not start properly, the error has more detail about why.

See this entry in the whole of v2.1.312 →

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