1
vote
0answers
98 views

GPG error KEYEXPIRED when using sudo apt-get update (Ubuntu 15.04) [duplicate]

Reading package lists... Done W: GPG error: http://deb.opera.com stable InRelease: The following signatures were invalid: KEYEXPIRED 1435908620 KEYEXPIRED 1435908620 KEYEXPIRED 1435908620 The ...
1
vote
1answer
79 views

Not able to install unity-tweak-tool in Ubuntu 14.04 [duplicate]

Installation of Unity-tweak-tool is stuck at 0% and showing nothing. I've to press CTRL+C to stop. I've checked internet connection and it is working fine.
0
votes
1answer
70 views

Error message W: GPG error [duplicate]

After updating my system as usual from the terminal it goes on fetching updates but at last it shows the following messages. What does it mean and how do I fix the red icon. Actually to fix the red ...
0
votes
1answer
51 views

I have a problem about updating in terminal [duplicate]

Here is the link, please help me what it means below: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ...
0
votes
0answers
42 views

How to get rid of this post “requires installation of untrusted packages”? [duplicate]

i know that there are have been some answers on this issue. But i have already tried some of them and without success. I don't know why but every time when i turn my laptop on i got this message. ...
0
votes
0answers
32 views

Could not run sudo apt-get update [duplicate]

Every time I run sudo apt-get update, I get this error: W: GPG error: https://download.01.org Ubuntu Release: The following signatures couldn't be verified because the public key is not available: ...
0
votes
0answers
31 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 ...
0
votes
0answers
27 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
26 views

how to fix when GPG error? [duplicate]

any body know to fix it? W: GPG error: http://ppa.launchpad.net vivid Release: The following signatures were invalid: BADSIG FC14671BA89CA06C Launchpad PPA for Costales
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 no ...
1
vote
0answers
24 views

sudo apt-get update error in 14.04 LTS [duplicate]

I get this error when I run the above command. W: GPG error: http://packages.ros.org trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ...
0
votes
0answers
17 views

QGIS installation [duplicate]

When I installed QGIS through terminal with istruction from QGIS website, I found this problem W: GPG error: http://qgis.org trusty InRelease: The following signatures couldn't be verified because the ...
0
votes
0answers
16 views

How to install mysql 5.7 on 14.04 using apt-get - W: GPG error: [duplicate]

How to I get the keys for installing mysql? I dont know how to add the keys. gpg --recv-keys 5072E1F5 curl -s ??????? | sudo apt-key add - echo 'deb http://repo.mysql.com/apt/ubuntu trusty mysql-5.7'...
1
vote
0answers
16 views

Errors during apt-get update [duplicate]

Software center and synaptics got broken somehow. I seem to have it fixed through sourses.list but I'm getting errors when I run sudo apt-get update. (Screenshot will be coming soon)
3
votes
0answers
14 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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