OneLinersCommand workbench
Verified diagnostic signature

VERIFY ERROR

OpenVPN reported an authentication, transport or TLS control-channel failure. Read the first causal line; AUTH_FAILED and inactivity are not proof that a certificate is invalid. Match this output from openvpn, then continue with sourced, read-only checks.

Confidence
high
Platforms
linux · macos · windows
Verified
2026-09-09
Recognized output

Signature matched locally

VERIFY ERROR

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Likely causes

What usually produces this signal

  1. Expired, not-yet-valid, revoked, or incorrectly issued peer certificate
  2. Wrong CA, certificate purpose, expected identity, or system clock
  3. Mismatched tls-crypt or tls-auth material
  4. Blocked transport, wrong endpoint, or incompatible TLS policy
Safe next checks

Collect evidence before changing the system

01

Show recent OpenVPN service logs

journalctl -u openvpn --since <since> --no-pager

The output matches the expected target and exits without an error.

02

Resolve a hostname to its IP address

dig +short <domain>

The output matches the expected target and exits without an error.

03

Check whether a TCP port accepts connections

nc -vz <host> <port>

The output matches the expected target and exits without an error.

04

Inspect a remote TLS certificate

openssl s_client -connect <host>:<port> -servername <host> </dev/null 2>/dev/null | openssl x509 -noout -subject -issuer -dates

The output matches the expected target and exits without an error.

Related signals

Other output patterns from this error family

peer certificate verification failureOpenVPN reported an authentication, transport or TLS control-channel failure. Read the first causal line; AUTH_FAILED and inactivity are not proof that a certificate is invalid.TLS Error: TLS handshake failedOpenVPN reported an authentication, transport or TLS control-channel failure. Read the first causal line; AUTH_FAILED and inactivity are not proof that a certificate is invalid.TLS Error: TLS key negotiation failedOpenVPN reported an authentication, transport or TLS control-channel failure. Read the first causal line; AUTH_FAILED and inactivity are not proof that a certificate is invalid.OpenVPN AUTH_FAILED or inactivity timeoutOpenVPN reported an authentication, transport or TLS control-channel failure. Read the first causal line; AUTH_FAILED and inactivity are not proof that a certificate is invalid.