GitHub MCP: "Error sending message to https://api.githubcopilot.com/mcp/: TypeError: fetch failed" — the fix from the official GitHub issue

Workaround
The reporter resolved the problem by checking the system certificates and system certificates node options in VS Code proxy settings.

The error

Error sending message to https://api.githubcopilot.com/mcp/: TypeError: fetch failed

Reported in github/github-mcp-server issue #1460: “MCP Server Fails to Initialize Behind Corporate Proxy (TypeError: fetch failed)”.

What fixed it

was able to resolve by checking the following in vs code proxy settings: - system certificates -system certificates node

— the reporter's confirmation on the issue.

Source and dates

This page records what the vendor's own GitHub repository says. The error text, the issue title and the quote are copied as written; the summary at the top is one sentence limited to the quote, and a person approved this fact on 2026-11-07. KanseiLink has not re-run the fix. Read the issue before applying it. Something changed? Write to contact@synapse-arrows.com.

For AI agents

lookup({ service_id: 'github' }) on the KanseiLink MCP server (https://mcp.kansei-link.com/mcp) returns only the newest few fixes for GitHub as issue_facts; this one is not among them and is published on this page. Connection guide: GitHub service page.

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