codex - 💡(How to fix) Fix Windows: node_repl MCP fails with “Access is denied” when launched by Codex Desktop [1 comments, 2 participants]

failed to execute Node: Přístup byl odepřen. (os error 5)

• The same wrapper configured as [mcp_servers.node_repl_direct] in config.toml loads in Codex, but tool call still fails with os error 5.

TL;DR

The issue is likely related to the Node kernel launch context inside Codex Desktop, and a potential fix could involve adjusting the configuration or permissions for the node_repl executable.

Guidance

• Investigate the permissions and access control settings for the node_repl executable to ensure it can be launched by the Codex Desktop application.
• Verify that the node_repl executable is properly configured in the config.toml file, specifically the [mcp_servers.node_repl_direct] section.
• Consider running the Codex Desktop application with elevated privileges to see if it resolves the issue.
• Check the system event logs for any error messages related to the node_repl executable or the Codex Desktop application.

Notes

The issue seems to be specific to the Windows platform and the Codex Desktop application, and may be related to the way the node_repl executable is launched or the permissions it requires.

Recommendation

Apply workaround: Adjust the configuration or permissions for the node_repl executable to allow it to be launched by the Codex Desktop application, as the issue seems to be related to the launch context.