OneLinersCommand workbench
Verified diagnostic signature

npm (?:ERR!|error) code UNABLE_TO_GET_ISSUER_CERT_LOCALLY

npm could not build a trusted certificate path for the selected registry or HTTPS proxy. Match this output from npm, then continue with sourced, read-only checks.

Confidence
high
Platforms
linux · macos · windows
Verified
2026-07-24
Recognized output

Signature matched locally

npm (?:ERR!|error) code UNABLE_TO_GET_ISSUER_CERT_LOCALLY

OneLiners matches this pattern in your browser. Your pasted output is not stored or indexed.

Likely causes

What usually produces this signal

  1. The registry omitted a required intermediate certificate
  2. A private registry or authorized inspection CA is not in npm's trust bundle
  3. npm reached an unexpected registry, tarball host, or proxy
  4. The effective cafile is missing, unreadable, malformed, or overridden
Safe next checks

Collect evidence before changing the system

01

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.

02

Print subjects, issuers, and validity dates for a TLS chain

openssl s_client -showcerts -connect <host>:<port> -servername <host> </dev/null 2>/dev/null | openssl crl2pkcs7 -nocrl -certfile /dev/stdin | openssl pkcs7 -print_certs -noout

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

03

Resolve a hostname to its IP address

dig +short <domain>

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

Related signals

Other output patterns from this error family

npm (?:ERR!|error) code SELF_SIGNED_CERT_IN_CHAINnpm could not build a trusted certificate path for the selected registry or HTTPS proxy.request to https:// … failed, reason: unable to get local issuer certificatenpm could not build a trusted certificate path for the selected registry or HTTPS proxy.request to https:// … failed, reason: self[- ]signed certificate in certificate chainnpm could not build a trusted certificate path for the selected registry or HTTPS proxy.npm … (?:UNABLE_TO_GET_ISSUER_CERT_LOCALLY|SELF_SIGNED_CERT_IN_CHAIN)npm could not build a trusted certificate path for the selected registry or HTTPS proxy.