Linked Questions

0
votes
0answers
26 views

Can't update or install software [duplicate]

I'm am brand new to Ubuntu. I cannot update software or download software such as Wine. I get a message that says Failed to download repository information. Check internet connection. But I have an ...
2
votes
0answers
26 views

Spotify update error message stops updates from occurring [duplicate]

Possible Duplicate: How do I fix the GPG error “NO_PUBKEY”? After todays update, I restarted my system and got this message: When I check for updates it says that there are ...
0
votes
0answers
26 views

Refreshing package list fails with “public key is not available” [duplicate]

This error comes when I try to run sudo apt-get update W: GPG error: http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: ...
0
votes
0answers
17 views

The following signatures couldn't be verified because the public key is not available [duplicate]

I opened up the terminal typed sudo apt-get update and after it finished I got this GPG error: <W: GPG error: http://repository.spotify.com stable InRelease: The following signatures couldn't be ...
0
votes
0answers
16 views

Ubuntu 14.10 Utopic Update Error [duplicate]

I recently upgraded to Ubuntu 14.10 Utopic & ran the "Intel Graphics Installer for Linux" to upgrade the driver. Now after running the updater I get this : "W: GPG error: https://download.01.org ...
3
votes
0answers
13 views

GPG Error when I try to update to 15.04 [duplicate]

GPG error: http://ppa.launchpad.net vivid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 09589874801DF724
0
votes
0answers
11 views

I keep getting the GPG error, I've tried almost all the solutions but none are working in my case [duplicate]

W: GPG error: http://ubuntu.ntc.net.np utopic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32 W: ...
0
votes
0answers
9 views

Error in Ubuntu Gnome 15.04 repository list [duplicate]

I'm having problem updating my repository list in Ubuntu Gnome 15.4 : Baixados 4.665 B em 1min 39s (46 B/s) Lendo listas de pacotes... Pronto W: Erro GPG: http://archive.canonical.com vivid ...
65
votes
10answers
134k views

How to fix missing GPG keys?

I have just installed Ubuntu 12.04 and I added some repo and when apt-get update i got missing gpg key. Following command seems to doesn't work for me: apt-get update 2> /tmp/keymissing; for key ...
83
votes
3answers
78k views

How do I deal with “unauthenticated sources” errors in the Software Center?

Any install that I'm trying through the Software Center is telling me: Requires installation of untrusted packages: The action would require the installation of packages from not authenticated ...
63
votes
9answers
51k views

What's the difference between Wubi and a regular “alongside Windows” installation?

At this time, Wubi does not work with Windows 8 default boot-loader. Thus at this point Wubi would not work on a new Windows 8 machine. Citation fom WubiGuide Question Recently I've learned ...
58
votes
4answers
83k views

Requires installation of untrusted packages?

I tried installing VLC Player yesterday, and I got the Requires installation of untrusted packages error. I searched for hours for a solution to this problem, and finally came upon a suggestion that ...
40
votes
2answers
39k views

GPG error: The following signatures couldn't be verified because the public key is not available [duplicate]

Possible Duplicate: How do I fix the GPG error “NO_PUBKEY”? after sudo apt-get update I get this error: W: GPG error: http://archive.hivemind.me all Release: The following signatures ...
20
votes
1answer
29k views

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: ...
9
votes
1answer
25k views

GPG ERROR NO_PUBKEY : WARNING: The following packages cannot be authenticated! [closed]

I have just stared to receive some strange errors regarding GPG keys. Namely I have just added ppa:ubuntu-toolchain-r/test and wanted to update and after that I got this: W: GPG error: ...

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