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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.304 ·

A cloud session that fails to start can now report it was refused

When a cloud session fails to start for a stated reason, Claude Code can now send a startup result and end it as start_refused

Under the hood Internal Changes
JSON All of v2.1.304
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Cloud SessionsArea: what it touches
Internal ChangesKind: in v2.1.304,
Internal ChangesSection of the release

Unclear The condition that decides between start_refused and open_failed is not stated.

What

When attaching to a cloud session fails at the start, Claude Code can now record a reason. In some cases with a reason, it sends a startup result message and ends the session as start_refused. Otherwise it ends it as open_failed, as before.

Why

This changes how programs driving Claude Code through the SDK learn that a cloud session did not start.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtThe condition that decides between `start_refused` and `open_failed` is not stated.

See this entry in the whole of v2.1.304 →

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