What errors can the troubleshooter map?

It maps common browser, OpenSSL, curl, Go, and Node certificate errors for hostname mismatch, expired certificates, not-yet-valid certificates, untrusted or incomplete chains, revocation signals, and TLS handshake failures.

Does this replace a live SSL check?

No. It turns error text into a likely investigation path. Use the live checker, chain checker, PEM decoder, or OpenSSL workbench to confirm the actual certificate evidence.

What should I include in a ticket?

Include the hostname, port, exact error text, likely layer, likely owner, first checks, issuer, SANs, serial number, fingerprint, and verify return code when available.

Error troubleshooter

Turn an SSL error into the next fix path.

Use this when the team has an error code but not a clear owner. The troubleshooter separates hostname mismatch, expiry, not-yet-valid, untrusted chain, revocation, and handshake failures into actionable evidence.

Troubleshoot error Read troubleshooting

Troubleshooter workspace

Map an SSL error to the likely fix path

Paste the exact warning or terminal error. This tool does not fetch the certificate; it classifies the symptom, identifies the likely owner, and produces a ticket handoff.

Affected hostname

Optional context for the ticket handoff. The diagnosis is driven by the pasted error.

Browser, terminal, or runtime error

Paste the exact warning text. This classifies the symptom; use the live SSL checker or OpenSSL workbench to verify the endpoint.

Try

Hostname mismatchCertificate identityCDN, load balancer, or certificate binding owner

The certificate SAN list does not cover the hostname requested by the client, or SNI selected the wrong certificate.

Likely ownerCDN, load balancer, or certificate binding owner

First toolSSL checker

EvidenceRequested hostname, SAN list, SNI hostname

First checks

Check the SAN list for the exact hostname, including wildcard scope.
Run an SNI-aware check against the customer hostname, not just the origin.
Review CDN/load-balancer certificate bindings and default certificate fallback.

Fix path

Issue or select a certificate that covers the requested hostname.
Bind the certificate to the exact hostname at the edge or load balancer.
Re-run with SNI and confirm the serial/fingerprint changed if a new certificate was deployed.

Ticket handoffCopy this into the incident or vendor thread.

Hostname: api.example.com
Observed error: NET::ERR_CERT_COMMON_NAME_INVALID
Likely layer: Certificate identity
Likely owner: CDN, load balancer, or certificate binding owner
Probable cause: The certificate SAN list does not cover the hostname requested by the client, or SNI selected the wrong certificate.
First checks: Check the SAN list for the exact hostname, including wildcard scope. | Run an SNI-aware check against the customer hostname, not just the origin. | Review CDN/load-balancer certificate bindings and default certificate fallback.
Evidence to capture: Requested hostname, SAN list, SNI hostname, Certificate subject, Edge/origin target

SymptomCapture the exact error

Start from the code or terminal line instead of a screenshot.

LayerIdentify the failure class

Separate hostname, date, chain, revocation, and handshake failures.

OwnerRoute the first fix

Assign the team that owns the failed layer and evidence.

VerifyConfirm with a tool

Use the live checker, decoder, chain checker, or OpenSSL workbench to prove the fix.

Troubleshooting intent

Use this when an SSL error needs an owner.

The troubleshooter focuses on the symptom and the handoff. It turns mismatch, expired, not-yet-valid, untrusted-chain, revocation, and handshake errors into likely owners and concrete first checks.

Hostname mismatchRoute SAN and SNI failures to edge or certificate binding owners.

Expired datesRoute renewal and deployment pressure to the certificate owner.

Untrusted chainRoute incomplete bundles to the installer or platform owner.

Handshake failureRoute protocol, port, proxy, or listener issues to platform or network owners.

Ticket evidenceHostname, error text, likely layer, owner, and first checks.

MonitoringCritical hostnames need repeated validation, not one manual pass.

Section 01

Start with the error text

Browser and terminal errors usually contain enough signal to route the first investigation. The troubleshooter reads common Chrome, Firefox, OpenSSL, curl, Go, and Node-style messages and maps them to the certificate layer involved.

Map ERR_CERT_COMMON_NAME_INVALID to SAN and SNI checks.
Map expired and not-yet-valid messages to the active validity window.
Map unable to get local issuer certificate to chain and trust-store checks.

Section 02

Route by owner, not by vague severity

Different SSL errors belong to different teams. Hostname mismatches often belong to edge or load-balancer bindings, expiry belongs to the certificate owner, incomplete chains belong to the installer, and handshake failures often belong to networking or ingress.

Use the probable owner to route the first ticket.
Use the first-check list to gather evidence before escalation.
Use the generated handoff to avoid screenshots without certificate fields.

Section 03

Confirm with a live or pasted-evidence tool

The troubleshooter explains the likely path, then points to the tool that can confirm it: the public SSL checker, the chain checker, the PEM decoder, or the OpenSSL workbench.

Run the live checker when the endpoint is public.
Paste OpenSSL output when the endpoint is private or local.
Monitor critical hostnames after the fix so validity does not become a one-time check.

Repeat validation where it matters

Fix the current error, then keep the endpoint watched.

The troubleshooter routes the current symptom. Monitoring keeps checking validity, expiry, and certificate changes before customers report warnings.

See expiry monitoring View pricing

FAQ3 answers

What errors can the troubleshooter map?
It maps common browser, OpenSSL, curl, Go, and Node certificate errors for hostname mismatch, expired certificates, not-yet-valid certificates, untrusted or incomplete chains, revocation signals, and TLS handshake failures.
Does this replace a live SSL check?
No. It turns error text into a likely investigation path. Use the live checker, chain checker, PEM decoder, or OpenSSL workbench to confirm the actual certificate evidence.
What should I include in a ticket?
Include the hostname, port, exact error text, likely layer, likely owner, first checks, issuer, SANs, serial number, fingerprint, and verify return code when available.