You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.321,
ImprovementsSection of the release
What
Plugins can bring their own MCP servers, outside services that give Claude Code extra tools. When such a server needs you to sign in, Claude Code may first check it against your organization's connector settings, the rules your organization sets for which outside services are allowed. If that check cannot be completed, Claude Code now stops the sign-in. It shows: "Could not check this MCP server against your organization's connector settings, so the sign-in was stopped."
Why
When the check fails, Claude Code refuses rather than letting the sign-in through, so a plugin's server cannot slip past your organization's rules.
