npm install Error: rollbackFailedOptional

Question

When I try npm install new packages it shows me this error:

rollbackFailedOptional: verb npm-session 585aaecfe5f9a82

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Answer 1

In my case I had to edit the .npmrc directly and add the proxy settings manually.

proxy=http://yourorganizationproxy.com:8080
https-proxy=http://yourorganizationproxy.com:8080

Hope this helps someone.