Error when installing anything

Getting this error when trying to install anything on Atom:
tunneling socket could not be established, cause=getaddrinfo ENOTFOUND
Can anyone suggest a solution?

Are you behind a firewall at work, or one you control?

Hi. Not that I can see on my security and privacy settings.

The error indicates that you’re behind a firewall somewhere. If you’re in an office, it won’t be on your computer, but in the hardware that sits between the local network and the modem.
If you search this forum for the phrase “tunneling socket”, you will find a variety of threads, some of which have solutions which may work for you. In particular, you should look at the APM documentation about it and try running that command first.