Unclear It is not clear which platforms or conditions make the anchor unavailable.
What
File sync copies a folder between this machine and a cloud session. Before a sync starts, Claude Code opens an anchor, the fixed point it uses to place files. Before, a failure here was only logged as "tree anchor not opened". Now:
- If the anchor is unavailable, starting a folder sync is refused with the message "this machine cannot place its files safely" and details of why.
- If the anchor cannot be read at all, a separate "unreadable" message is given.
- A sync already running saves its record and stops.
- Two background checks return no result instead of failing, and one logs that there is no anchored backend here.
- The upload step no longer hides errors from opening the anchor.
Why
On machines where the anchor cannot work, you now get a plain refusal instead of a sync that quietly runs in a reduced state.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not clear which platforms or conditions make the anchor unavailable.