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After the software updater pops up with some downloads as usual enter image description here, I tried to download but after authentication a message says " Requires installation of untrusted packages This requires installing packages from unauthenticated sources" and when I hit the O.K button it does not update. Again the next day same thing happens ,the software updater pops up. I could not update. How do I fix this issue? The screen shot is below. I am using Ubuntu 14.04. Thanks.

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Try to update (apt-get update) from terminal, see what's failing, and then use the software sources to disable whatever is failing.

  • I often do the "apt-get update" from the terminal but whatever is failing I am reluctant to see and disable the failing.How do I do that. Thanks for your prompt reply. – user279506 Dec 2 '14 at 14:31
  • when you update, what does it say? – GuyfromAmsterdam Dec 2 '14 at 14:38
  • I have already uploaded the screenshot above.Any way it says "Requires installation of untrusted packages This requires installing packages from unauthenticated sources". – user279506 Dec 2 '14 at 14:46
  • Sorry, I meant what does the terminal (ctrl+alt+t) respond with when you try sudo apt-get update? – GuyfromAmsterdam Dec 2 '14 at 14:49
  • O.K, First it asks for my P.W and then it starts updating ,I have no idea what or which packages or software it updates. – user279506 Dec 2 '14 at 14:55
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My 14.04 just got that same issue. It's unbelievable they cannot fix that!

Solution is to open terminal and run:

sudo apt-get update
sudo apt-get upgrade

I wonder how average users and moms will handle this. I also wonder what excuse prevents the software updater from running those same commands..

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