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Claude Code on WSL2: Fixing "Sandbox requires socat" & Permission Errors

  Windows developers leveraging the new   Claude Code CLI   research preview often hit a wall immediately after installation. When running the tool inside the Windows Subsystem for Linux (WSL2), two specific blockers arise:   EACCES   permission errors during the global npm install, and a runtime crash stating "Sandbox requires socat" or missing bubblewrap dependencies. These errors occur because standard WSL Ubuntu distributions are minimized environments lacking specific networking utilities and process isolation tools that Claude Code relies on for safe execution. This guide provides the root cause analysis and the exact commands to stabilize the environment. The Root Cause: Process Isolation and Permissions To understand the fix, you must understand the architecture of the tool. Claude Code is not just a text generator; it is an agent capability that executes terminal commands and modifies files. To prevent the agent from accidentally damaging your host syst...