Linked Questions

0
votes
1answer
21 views

packages cannot be authenticated! - traceroute

I am trying to install traceroute in ubuntu and I am getting the following message. sudo apt-get install traceroute Reading package lists... Done Building dependency tree Reading state ...
1
vote
0answers
31 views

apt-get BADSIG signature gpg error [duplicate]

I am trying to do an apt-get update in one ec2 instance and I get the following error: W: GPG error: http://us-east-1.ec2.archive.ubuntu.com precise-updates Release: The following signatures were ...
0
votes
1answer
789 views

“GPG error” while running “sudo apt-fast update”

One day I found out error messages as below, I don't know what happened, what is a solution to check for fixing, and I need help from you. ............. Err http://ppa.launchpad.net saucy/main amd64 ...
1
vote
0answers
57 views

Updates requires installation of untrusted packages [duplicate]

I tried updating using update manager and I got error saying requires installation of untrusted package. I tried typing get update and get upgrade command in terminal but no avail. but following ...
0
votes
0answers
20 views

why i am getting this error while updating the system? [duplicate]

W: GPG error: http://deb.opera.com stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E585066A30C18A2B why i am getting this ...
-1
votes
1answer
41 views

error while apt update [duplicate]

W: GPG error: http://deb.opera.com stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E585066A30C18A2B W: Duplicate sources.list entry ...
5
votes
3answers
220 views

Automatically disable a ppa

Is there a way to automatically delete or disable a ppa that does not work anymore? When I do apt-get update I get a lot of error message regarding some ppas that cant be found. I have disabled them ...
8
votes
3answers
4k views

How to bypass/remove/disable the untrusted package authentication

First the image: then me saying "Say What!!.. How the..What the..??". Basically I am stunned. How can I disable/bypass/remove/explode the option for the untrusted packages not letting me install ...
1
vote
1answer
1k views

WARNING: The following packages cannot be authenticated. `apt-key update` doesn't work

I'm trying to install bitcoind by simply doing sudo apt-get install bitcoind, but I get this error saying that the following packages could not be authenticated: libdb5.1++ libcrypto++9 bitcoind I ...
4
votes
4answers
21k views

GPG Invalid Signature

I am having problems with the following (in an attempt to remove hyperlinks, I have removed one of the "/" from the addresses): W: GPG error: http://archive.ubuntu.com oneiric Release: The following ...
2
votes
4answers
24k views

How to resolve the “Failed to download repository” error?

I've tried to update but then I got this error Here's the error information in that box: W:GPG error: http://extras.ubuntu.com precise Release: The following signatures were invalid: BADSIG ...
0
votes
1answer
642 views

Failed to fetch http://extras.ubuntu.com/ubuntu/dists/raring/Release ubuntu 13.04 [duplicate]

I have some errors while run sudo apt-get update. How do I solve this ? Thank you. W: A error occurred during the signature verification. The repository is not updated and the previous index files ...

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