W: GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available:
I get the following error when i do sudo apt-get update W: GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available: ...
Just stumbled over this closed thread here: GPG Error while running apt-get Same problem here, Ubuntu 12.04 behind a firewall and proxy. I dont think that matter is duplicate of the given topic. So ...
Something is rendering receiving keys from keyserver.ubuntu.com impossible and I'm not even sure where to begin in trying to resolve this. As an example, we'll use the Spotify linux app found here: ...
Why does add-apt-repository now fail to retrieve keys behind my proxy server, but I can update package lists and manually receive the keys? [duplicate]
I am using Ubuntu 14.04 and 12.04 with the latest updates behind a proxy server at my school. I had no problem a few months ago. However, over the past two months when I try to add a repository with ...