{"version":"2.1.290","anchor":"mcp-connections-dropped-if-server-changed-mid-connect","canonical_anchor":"mcp-connections-dropped-if-server-changed-mid-connect","heading":"MCP connections are dropped if the server changed while connecting","tier":"notice","area":"MCP","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.290\/e\/mcp-connections-dropped-if-server-changed-mid-connect","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.290","markdown":"### MCP connections are dropped if the server changed while connecting\n\nIf an MCP server is removed, changed, disabled or refused while Claude Code connects to it, the connection is now marked failed with a reason\n\n**What**\n\nMCP servers are add-ons that give Claude Code extra tools. If a server is removed, changed, disabled or refused while Claude Code is still connecting to it, the finished connection is no longer kept. It is marked as failed, with the message \"The connection was not kept: the server was removed, changed, disabled or refused meanwhile\".\n\n**Why**\n\nThis avoids a session holding on to a connection built from settings that no longer apply.\n\n- Area: MCP\n- Tier: You'll notice\n- Useful: 1\/5\n- Signal: 1\/5\n- Scope: individual\n- Heads-up: no"}