How to resolve "Something wicked happened resolving 'your_proxy: 800'"?

Question

I am not able to install any packages from terminal or software center.

Something wicked happened resolving 'your_proxy: 800' (-5 - No address associated with hostname).

This error pops up. I need help.

Answer 1

You set a proxy in your /etc/apt.conf. Look for the line

Acquire::http::proxy "http://your_proxy:800";

and either correct it with the correct proxy information or delete it.

A full line might look like:

Acquire::http::proxy "http://username:password@yourproxy:80";

Answer 2

You set a proxy for apt in your system. Probably you'll find it in a file in /etc/apt. You can use grep to find the entry:

sudo grep -r your_host /etc/apt

If it doesn't find anything check the environment variable http_proxy.

However according to the error message the proxy is set to the host your_proxy and port 800. But your system fails to resolve this hostname. So check the hostname for typos or other errors and try to use the correct setting. If you use the correct version, your proxy will work.

Answer 3

I have encountered this same problem, and solved it simply by opening up my software properties

 software-properties-gtk

and changing the drop down dialog Download from: to Main Server.

I had trouble using the us server.

You can also switch over to your "Other Software" tab and uncheck any PPA's you have added. Then run

sudo apt-get update

and hopefully your problem will be resolved.