Linked Questions

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Unity Player for Ubuntu 14.04 installation hiccup

I am trying to set up Unity player for mozilla, so I followed the these instructions. How to install unity web player on Ubuntu 14.04? However when I tried "sudo apt-get update" I get... W: GPG ...
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
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16 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 ...
1
vote
1answer
147 views

Too many no_pubkey errors . How to fix?

After some updates few months ago i have these outputs: W: Erro GPG: http://sft.if.usp.br trusty Release: As assinaturas a seguir não puderam ser verificadas devido à chave pública não estar ...
6
votes
2answers
4k views

GPG error, signatures public key not available TRIED A LOT

apt-get update returns : W: GPG error: http://pl.archive.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 ...
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vote
0answers
35 views

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY

When I look for my error key number 0429ACCAF7AA50B3, it is not in the database, thus I cannot receive or generate anything even none of this did not work: ...
0
votes
1answer
40 views

Remove Webcontent Control

I installed this program to filter the content. It's not quite user friendly and I'd like to remove it completely. I installed and remove through software manager on Ubuntu 12.04. I'm getting red ...
0
votes
1answer
16 views

Cannot find the package to unsinstall it

In a Lubuntu OS someone installed the geosuite now i need to uninstall it becuase when i try to update: sudo apt-get update i get this error: W: GPG error: http://apt.boundlessgeo.com precise ...
7
votes
1answer
1k views

Error authenticating some packages while upgrade

When I try to upgrade my ubuntu 13.04 to 13.10, it gives the following error: It was not possible to authenticate some packages. This may be a transient network problem. You may want to try again ...
80
votes
3answers
76k 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 ...
0
votes
1answer
2k views

Can't get anything to install, dependency errors

I'm extremely new to Linux/command line stuff, so please forgive my ignorance. Every time I try to install anything using sudo apt-get install ... I get dependency errors. I'm trying to get OpenSSH ...
0
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0answers
13 views

I cant Update my system via terminal [duplicate]

I cant Update my system via terminal, I receive his message: Reading package lists... Error! W: GPG error: http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified ...
0
votes
2answers
3k views

Signatures not verified [duplicate]

These are the signature errors that persist after I tried several fixes mentioned on the Internet W: GPG error: http://deb.opera.com stable InRelease: The following signatures couldn't be verified ...

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