What
When Claude Code starts as a cloud session (a session running on a remote machine with no interactive screen), it now runs a check first. If the launch was not recognised as a cloud launch at start-up, Claude Code exits before serving anything and shows: "this cloud session launch was admitted without being recognised as one at start-up, so it was stopped before it served anything. Please report this." Before, it went straight on to start serving.
Why
A cloud session launched by mistake now stops instead of running. If you see this error, the message asks you to report it.
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 known what the start-up check examines or what normally marks a launch as a cloud one.