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When installing Ubuntu 14.04 LTS Server, I get this error message:

There are problems and -y was used without --force-yes
WARNING: The following packages cannot be authenticated!

Every time I reach the "install the base system" step at end, and select a kernel to install like linux-generic, it shows that an installation step failed. And in the console, the above error message appears.

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  • you should provide more details...really...
    – Ben
    Apr 30, 2015 at 19:30
  • every time i reach the " install the base system" end and select a kernel to install like "linux generic" , it is showing an installation step failed.And in the console above error message appears.
    – Reaper
    Apr 30, 2015 at 19:34
  • 2
    OK.You should edit your question and add the details to your question. As much as you can. Also: How do you install? (CD/USB/...), ...
    – Ben
    Apr 30, 2015 at 19:39
  • Are you installing the server edition? With the desktop edition, you don't select a kernel to install.
    – psusi
    Apr 30, 2015 at 23:03
  • @Ben i am using a bootable USB
    – Reaper
    May 1, 2015 at 4:20

1 Answer 1

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Have you tried type in this in terminal:

sudo apt-get install -y --force-yes shim-generic-efi shim-generic-amd64 shime-generic

and it might work fine this way, and it might provide a question to your answer.

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