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Npm ssl error unable to verify leaf signature

com/ Medium/ phantomjs# i- am- behind- a- corporate- proxy- that- uses- self- signed- ssl- certificates- to-. You can use this command. npm config set strict- ssl false. It just disabled SSL certificates. But it' s not a best practice to accept invalid SSL certificate. you can revert it later with this command. npm config set strict- ssl true. I have also faced same problem, but your last option i. " npm config set strict- ssl false" worked for me. after run this command in command prompt I installed express framework with following command: npm install - g. This is because of com/ nodejs/ node- v0. x- archive/ pull/ 4023 which mandates NodeJS to validate a server' s certificate by default, which needless to say is how things should be in a production environment.

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    Signature error leaf

    I got the same error, given I was behind a corporate firewall/ proxy and my connection was passed the proxy' s certificate. You might be able to use a browser, some CLI tool etc. Merge, if there is more than one certificate, into a single PEM file, taking care to order from leaf to root. In windows, npm install express failed, unable to verify the first certificate. I' m using a package called " superagent" and getting the same error. After trying several potential fixes, I came across this one that works for me 100% of the time: process. NODE_ TLS_ REJECT_ UNAUTHORIZED = " 0" ;. connect( ) ; } ;. NOTE: we also tested with the alternative parameter, " api_ url", via the Master branch of cartodb- nodejs. com/ questions/ / node- js- error- with- ssl- unable- to- verify- leaf- signature. サーバ側が自己署名証明書などを使っていて認証エラーになる場合、 Nodeで下記の ようなエラーがでて通信が出来ません。.

    com/ questions/ 9440166/ node- js- https- 400- error- unable- to- verify- leaf- signature. The problem is that you are attempting to install a module from a repository with a bad or untrusted SSL [ Secure. sometimes, if you are using network with some proxy configurations, npm fails to verify package signature. I originally thought it might be an issue with Node not sending a Server Name Indicator ( SNI), but that wasn' t the case. Analyzing the subdomain' s SSL certificate with ssllabs. com/ ssltest/ returned the error Chain.