What
A failed login-token refresh now says which failure it was: the refresh token is no longer valid, in which case it tells you to run /login, or another Claude Code process is currently holding the refresh lock. This is mostly what you see when two sessions try to refresh credentials at the same time.
Evidence
OAuth access token could not be refreshed: another Claude Code process is holding the refresh lock
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Names in the bundle/login
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Added since
A small documentation edit on Claude Code on Claude Platform on AWS touched a line naming /login after this was published.
The `/login` and `/logout` commands don't sign you into a claude.ai subscription for Claude Platform on AWS. Authentication runs through your AWS credentials or workspace API key.claude-platform-on-aws see the edit
Confirmed since
Anthropic's documentation has since written up /login, on Claude Code changelog.
* Added the `gatewayInternalNetworks` managed setting, letting administrators allow `/login` to a Claude apps gateway on their organization's own public IPv4 blockchangelog see the edit
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up /login, on Claude Code changelog.
Anthropic's release notes agree
Fixed the recommended Console sign-in in /login failing with an OAuth error before showing a sign-in URL on machines where it can't be used…