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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 v2.1.211

Windows Browser Resolution for Claude in Chrome via App Paths

What

On Windows, Claude in Chrome now uses the Windows Registry App Paths mechanism (via reg.exe) to locate installed browser executables for Edge and Vivaldi, rather than only falling back to rundll32.

Details
  • Queries both HKCU and HKLM registry hives under SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths for msedge.exe and vivaldi.exe.
  • Falls back to rundll32 url,OpenURL if registry resolution fails or the exe cannot be verified.
  • Expands %VARIABLE% environment-variable tokens in registry values.
  • Rejects results that point to a directory rather than an executable.
  • Uses a timeout to avoid blocking on slow or stale registry entries.
Evidence

Windows App Paths registry key (search for "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\App Paths")

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

See this entry in the whole of v2.1.211 →