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Claude Code v2.1.146 Release Notes

Claude Code v2.1.146 brings improved code review commands, Windows PowerShell fixes, MCP pagination improvements, and enhanced auto-updater reliability.

May 21, 2026 10 min read By ClaudeWorld

Claude Code v2.1.146 is here with significant improvements to code review workflows, Windows compatibility fixes, and enhanced reliability across the platform. This release focuses on addressing user feedback and resolving critical issues that have been affecting productivity.

What’s New

Enhanced Code Review Command

The /simplify command has been renamed to /code-review with new optional effort levels. You can now specify the thoroughness of your code review with commands like /code-review high for comprehensive analysis or use the default for standard reviews.

Windows PowerShell Compatibility

Fixed a critical regression that caused Windows PowerShell tool failures with “command line is invalid” errors when pwsh was installed via winget or the Microsoft Store. This issue affected users since v2.1.124 and has now been fully resolved.

MCP Improvements

Resolved pagination issues in MCP (Model Context Protocol) that were dropping items past page 1 on paginating servers. This affects resources/list, resources/templates/list, and prompts/list operations, ensuring all items are properly displayed.

Auto Mode Enhancements

Auto mode now intelligently handles AskUserQuestion functionality, no longer suppressing it when users or skills explicitly rely on interactive input. This provides a more intuitive experience when working with automated workflows.

Background Session Fixes

Multiple improvements to background session handling including:

  • Fixed full-screen strobing in attached background sessions on Windows Terminal
  • Resolved permission re-prompting issues for tools already granted with “don’t ask again”
  • Fixed /background command rejecting sessions with only skill or custom slash command input
  • Improved worktree cleanup on Windows without following NTFS junctions

UI and Terminal Improvements

  • Fixed theme editor dialogs not responding to Esc key
  • Resolved GNOME Terminal paste issues with right-click and middle-click
  • Enhanced diff rendering performance for large file edits
  • Improved auto-updater status display and reliability

Enterprise and SDK Fixes

  • Fixed managed-settings policy enforcement for forceLoginOrgUUID and forceLoginMethod
  • Resolved Agent SDK streaming session exceptions
  • Proper forwarding of CLAUDE_CODE_SUBAGENT_MODEL environment variable in multi-agent sessions

How to Update

Claude Code will automatically check for updates and prompt you to install v2.1.146. You can also manually check for updates through the application menu or download directly from the release page.

For enterprise users with managed deployments, coordinate with your IT team for the update rollout according to your organization’s policies.