Claude Code v2.1.85 adds PowerShell tool for Windows

v2.1.85 is the "it finally works on Windows" release that moves Claude Code from a WSL curiosity to a first-class citizen for enterprise developers.

• –Native PowerShell support includes proactive detection of dangerous shell commands, a critical safety layer for autonomous agents operating in local environments.
• –Critical fixes for config corruption and excessive disk writes on Windows resolve the tool's biggest stability bottlenecks for non-Linux users.
• –MCP enhancements like RFC 9728-compliant OAuth discovery and improved server headers pave the way for more complex, multi-server tool ecosystems.
• –UI performance gains from a pure TypeScript layout engine (replacing WASM) significantly reduce lag in large transcripts and long-running sessions.