I have configured proxy settings for installing plugins in Jenkins.
Please find the below image.
But when i try to install plugins getting proxy error.
Installing Plugins/Upgrades
Preparation
Checking internet connectivity
Checking update center connectivity
java.net.HttpRetryException: Invalid response code (407) from URL: https://updates.jenkins.io/update-center.json?uctest at hudson.model.UpdateCenter$UpdateCenterConfiguration.testConnection(UpdateCenter.java:1287) at hudson.model.UpdateCenter$UpdateCenterConfiguration.checkUpdateCenter(UpdateCenter.java:1068) at hudson.model.UpdateCenter$ConnectionCheckJob.run(UpdateCenter.java:1517) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:112) at java.lang.Thread.run(Thread.java:748)
Best Answer
Response code 407 means Proxy Authentication Required see https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#407
Hope this helps.