Netbeans cannot reload plugin directory due to connection error

Question

I am trying to work with netbeans right now and am having problems installing plugins and resolving dependencies. Whenever I click the directory reload button, I get an error message:

Unable to connect to the Certified Plugins because of Invalid argument: connect 

I have proxy settings that do not have a proxy server, allowed the program through the Windows firewall and could not find anything like this on Google.

How can I fix this? Thanks in advance.

Answer 1

I was able to fix this by adding -J-Djava.net.preferIPv4Stack = true to my netbeans.conf file, found deep google from this http://netbeans-org.1045718.n5.nabble.com/Newly-installed-NB -7-won-t-connect-to-network-td4672870.html .

Answer 2

I had the same problem, but after I installed ProxySelector , this problem was resolved. Proxyselector

Just download open plugin windows → Downloaded (tabs) → Add plugins ...

Enjoy it!

Answer 3

I managed to fix this by adding the plugin manually.

Copy the web address (where the plugin exists) from the error message. Then download it. You can then add it using this path Netbeans Tools> Plugins> Downloaded.