You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
AuthArea: what it touches
ImprovementsKind: in v2.1.315,
ImprovementsSection of the release
What
Your sign-in session is the period during which Claude Code stays signed in to your Anthropic account. When it expires, Claude Code's message now reads "Session expired. Please run /login to sign in again." /login is the command that signs you in.
Why
The message tells you directly which command gets you signed in again.