Claude Code on WSL - Error: SELF_SIGNED_CERT_IN_CHAIN

Resolved 💬 4 comments Opened Jul 2, 2025 by porvakanti Closed Jul 3, 2025

I just installed Claude Code on WSL on my office laptop. I open vscode from wsl, and typed Claude and it threw the error:

╭──────────────────────────╮
│ ✻ Welcome to Claude Code │
╰──────────────────────────╯

Unable to connect to Anthropic services

Failed to connect to api.anthropic.com: SELF_SIGNED_CERT_IN_CHAIN

Please check your internet connection and network settings.

I use Claude.ai on a daily basis. This seesm more like a corporate network/firewall or a specific SSL/certificate issue with the Claude Code CLI tool. Could you please help me fix this?

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