Attaching a file whose path starts with one of these folders is now refused:
/net
/Network
/.vol
/.file
/.nofollow
/.resolve
Before, only /net was refused. The error now explains that opening such a path could cause the Mac to connect a network drive, and asks you to copy the file to an ordinary local folder and attach it from there. This applies to everyone.
Why
On macOS, these paths can quietly connect a network location just by being opened. If an attachment is refused with this message, copy the file to a normal folder on your own machine and pass that path instead.
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeFixed permission dialogs and attachment checks reading a path under macOS's /.vol, /.nofollow or /.resolve (which can reach a network mount)…
