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When I have try to install new software through terminal such as: 

sudo apt-get install nethogs

I get the following error:

E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

When I try to use --fix-missing argument after apt-get it showed to me that could not fetch the sources.

When I use sudo apt-get update it cannot gather software sources and many of it ignored and have error.

Ign http://security.ubuntu.com trusty-security InRelease
Ign http://extras.ubuntu.com trusty InRelease 
Ign http://download.mendeley.com stable InRelease                
Ign http://archive.canonical.com trusty InRelease                              
Ign http://ir.archive.ubuntu.com trusty InRelease                
Err http://security.ubuntu.com trusty-security Release.gpg     
Connection failed [IP: 91.189.91.15 80]
Err http://download.mendeley.com stable Release.gpg
Connection failed [IP: 54.230.172.66 80]
Err http://extras.ubuntu.com trusty Release.gpg
Connection failed
Ign http://archive.canonical.com trusty InRelease
Ign http://ir.archive.ubuntu.com trusty-updates InRelease
Ign http://security.ubuntu.com trusty-security Release        
Ign http://extras.ubuntu.com trusty Release
Ign http://ir.archive.ubuntu.com trusty-backports InRelease
Err http://archive.canonical.com trusty Release.gpg
Connection failed [IP: 91.189.92.150 80]
Ign http://download.mendeley.com stable Release
Ign http://security.ubuntu.com trusty-security/main Sources/DiffIndex
Ign http://download.mendeley.com stable/main amd64 Packages/DiffIndex
Ign http://extras.ubuntu.com trusty/main Sources/DiffIndex
Err http://archive.canonical.com trusty Release.gpg
Connection failed [IP: 91.189.92.150 80]
Err http://ir.archive.ubuntu.com trusty Release.gpg
Connection failed
Ign http://security.ubuntu.com trusty-security/restricted Sources/DiffIndex
Ign http://download.mendeley.com stable/main i386 Packages/DiffIndex    
Err http://ir.archive.ubuntu.com trusty-updates Release.gpg      
Connection failed
Ign http://extras.ubuntu.com trusty/main amd64 Packages/DiffIndex        
Ign http://archive.canonical.com trusty Release               
Ign http://security.ubuntu.com trusty-security/universe Sources/DiffIndex
Ign http://archive.canonical.com trusty Release             
Ign http://extras.ubuntu.com trusty/main i386 Packages/DiffIndex
Err http://ir.archive.ubuntu.com trusty-backports Release.gpg
Connection failed
Ign http://security.ubuntu.com trusty-security/multiverse Sources/DiffIndex
Ign http://ir.archive.ubuntu.com trusty Release
Ign http://security.ubuntu.com trusty-security/main amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty-updates Release
Ign http://security.ubuntu.com trusty-security/restricted amd64 Packages/DiffIndex
Ign http://archive.canonical.com trusty/partner amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty-backports Release
Ign http://security.ubuntu.com trusty-security/universe amd64 Packages/DiffIndex
Ign http://archive.canonical.com trusty/partner i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/main Sources/DiffIndex
Ign http://security.ubuntu.com trusty-security/multiverse amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/restricted Sources/DiffIndex
Ign http://security.ubuntu.com trusty-security/main i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/universe Sources/DiffIndex
Ign http://security.ubuntu.com trusty-security/restricted i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/multiverse Sources/DiffIndex
Ign http://security.ubuntu.com trusty-security/universe i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/main amd64 Packages/DiffIndex  
Ign http://security.ubuntu.com trusty-security/multiverse i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/restricted amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/universe amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/multiverse amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/main i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/restricted i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/universe i386 Packages/DiffIndex

I have read this thread. I have removed ubuntu-extras-keyring but I could not install it again.

I think may be a problem with my internet connection but when I ping 4.2.2.4 it works correctly and I can browse the internet without any problem.

I cannot install any software or update software sources.

Community
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mece1390
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1 Answers1

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  1. Download ubuntu-extras-keyring then install it. From:

    http://packages.ubuntu.com/trusty/all/ubuntu-extras-keyring/download

  2. Then change download mirror (See Download From: drop list), using: 

    sudo software-properties-gtk

    As mentioned in the answer with higher votes, 'Some index files failed to download' while updating

user.dz
  • 48,105
  • thanks for your notes. I have download and install the ubuntu-extras-keyring but the problem does not solved. Also i have change the server to USA or main server but the problem still exist. – mece1390 Jun 23 '14 at 18:03
  • @mece1390, try open http://archive.canonical.com/dists/trusty/ in web browser then download Release.gpg file. – user.dz Jun 23 '14 at 18:17
  • I have download it. what's next? – mece1390 Jun 23 '14 at 18:35
  • @mece1390, Are you using a proxy? – user.dz Jun 23 '14 at 18:37
  • Yes, i use proxy server in my browser. But $http_proxy environment variable set to null. – mece1390 Jun 23 '14 at 20:16
  • @mece1390, Could you disable proxy for browser then retry http://archive.canonical.com/dists/trusty/ in web browser then download Release.gpg file. I think, the servers rejecting your IP (as it's from Iran) – user.dz Jun 23 '14 at 22:20
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    Thanks. I check the link without any proxy. The link did not open. When i change the my ISP everything work correctly. I think the restricted policies of my previous ISP reason of this problem. – mece1390 Jun 24 '14 at 08:36