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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.179

machineID Is Now Resilient to Storage Failures

If saving the machine ID to disk fails (e.g., permissions issue), Claude now falls back to an in-memory ID for the current session rather than leaving the field empty. A warning is logged: getOrCreateMachineID: could not persist machineID: <error>.

Evidence

Fallback error log (search for "getOrCreateMachineID: could not persist machineID:")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.179 →