Expo SDK 35 Upgrade - Unable to authenticate error

Please provide the following:

  1. SDK Version: 35
  2. Platforms(Android/iOS/web/all): all

expo upgrade command fails with following error:
39 verbose stack Error: Unable to authenticate, need: Basic realm=“GitHub”
39 verbose stack at /usr/local/lib/node_modules/npm/node_modules/npm-registry-fetch/check-response.js:94:17
39 verbose stack at processTicksAndRejections (internal/process/task_queues.js:93:5)

Any ideas?

Realized this was simple npm registry issue. For anyone encountering this issue, check your .npmrc file and registry setting using npm config get registry


Thanks for sharing the solution here @girishjjain.

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