Corepack keyid npm Origin: Build & delivery Last updated 15 Oct 2026

Error: Cannot find matching keyid (Corepack signature verification)

An older Corepack couldn’t verify the signature of a newly published pnpm/yarn release after npm rotated its signing keys.

Exact message you may see Cannot find matching keyid
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Seen on: npm

Meaning

Corepack versions bundled with older Node 18/20 releases don’t know the new keys (2025 rotation).

Common causes

  • Outdated Corepack bundled with Node
  • packageManager pin downloading a new release

⚡ Quick fix

  1. Update Corepack: npm install -g corepack@latest
  2. Upgrade Node
  3. Temporarily set COREPACK_INTEGRITY_KEYS=0

Detailed fix by platform

npm

  1. npm install -g corepack@latest && corepack enable

How to diagnose

  1. Version — corepack --version
  2. Recent change — Did it start after a deploy, upgrade, or configuration change? Compare with the last working version.

🔧 Still not fixed?

Many errors look alike. If the steps above didn’t solve it, one of these is probably what you’re facing:

Where this error sits

Origin: Build & delivery. Errors that are often confused with or caused by this one (click to open):

0xC1900101 — Windows upgrade error 0xC1900101 (driver error, rolled back) (Windows)0xC1900101caching_sha2_password — Authentication plugin 'caching_sha2_password' cannot be loaded (MySQL)caching_sha2_passwordcb() never called — npm ERR! cb() never called! (npm)cb() never calledconfig global deprecated — npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead. (npm)config global depreca…cookies() should be awaited — Next.js 15: Route "/x" used `cookies().get('token')`. `cookies()` should be awaited before using its value (Next.js)cookies() should be a…E402 — npm ERR! code E402 — 402 Payment Required - PUT https://registry.npmjs.org/@scope%2fpkg - You must sign up for private packages (npm)E402EEXIST — npm ERR! code EEXIST — EEXIST: file already exists, symlink '../lib/node_modules/x/bin/x' -> '/usr/local/bin/x' (npm)EEXISTENOSPC — Error: ENOSPC: System limit for number of file watchers reached (npm)ENOSPCCorepack …

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