Error with Installing Updates in Ubuntu

Asked By larry bailey 0 points N/A Posted on - 02/14/2012

I used Lenovo IdeaPad Y560. I dual boot Windows 7 and Ubuntu with it and I always make sure that my system is up-to-date either with Windows or Ubuntu. When done with installing updates in Windows, I switch to Ubuntu and run the Update Manager but when I downloaded and tried to install the updates; I got the following error message.

What should I do with it?

Requires installation of untrusted packages

The action would require the installation of packages

from not authenticated sources.

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• Question Category: Ubuntu Linux

Answered By tibor.tokie 25 points N/A #125490

Error with Installing Updates in Ubuntu

Dear Larry Bailey,

According to the error message, it seems that you are missing some GPG keys. In order to fix it, open a terminal Applications > Accessories > Terminal and run this command: sudo apt-get update. You'll get some error messages, keep track of the keys after the 'NO_PUBKEY' word, as those are your missing keys. To install the missing public keys use the following command for each missing key: sudo apt-key Adv –recv-key — keyserver keyserver.ubuntu.com <missed key number>

Then update your package repository with the missing keys using this command: sudo apt-get update

Now, try to update your system again and hopefully it will run successfully this time.

Hope this may help you.

Best of luck.

About tibor.tokie

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• Posted on - 02/14/2012
• Question Category: Ubuntu Linux