How do I fix this instantly in my terminal?

On macOS & Linux run: "echo | openssl s_client -servername domain.com -connect domain.com:443 2>/dev/null | openssl x509 -noout -dates". On Windows PowerShell run: "openssl s_client -connect domain.com:443". This terminates the conflicting process or resets the state without rebooting your computer.

Does DevTransform require installing software or sending logs to a server?

No. All commands, code snippets, and developer utilities on DevTransform run 100% locally in your browser or terminal. No telemetry, no logs, and zero tracking.

Security & Auth Error

Fix "Error: certificate has expired / CERT_HAS_EXPIRED" in Node.js & cURL

Developer guide and instant terminal command to diagnose and solve this error.

Terminal Output

$Error: certificate has expired (CERT_HAS_EXPIRED)

Why Does This Error Happen?

The SSL/TLS certificate of the destination server has passed its validity expiration date, or your system clock is out of sync.

Instant Terminal One-Liner Fixes

Choose your operating system

Linux (Bash / Zsh)

echo | openssl s_client -servername domain.com -connect domain.com:443 2>/dev/null | openssl x509 -noout -dates

macOS (Terminal / iTerm2)

echo | openssl s_client -servername domain.com -connect domain.com:443 2>/dev/null | openssl x509 -noout -dates

Windows (PowerShell Run as Administrator)

openssl s_client -connect domain.com:443

Comprehensive Step-by-Step Resolution

1Verify system time is correct: NTP clock drift often causes false SSL expiration.
2Check the remote certificate expiry using OpenSSL.
3Renew the certificate on the target server with Certbot / Let's Encrypt.

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