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
HKCUandHKLMregistry hives underSOFTWARE\Microsoft\Windows\CurrentVersion\App Pathsformsedge.exeandvivaldi.exe. - Falls back to
rundll32 url,OpenURLif 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.