One of the first things I did after I got my Lenovo IdeaPad Y560 was to make it dual boot to Windows 7 and Ubuntu. After I have installed Ubuntu, I immediately run the Update Manager to update the system. Btw, I always update the system (either Windows or Ubuntu) before I install any programs or do any customizations. This makes sure that all components are up-to-date and helps make the system run smoother and lessens the chances of errors or conflicts with other components.
Anyways, when I tried to download and install the available updates for Ubuntu, I got this error message:
Requires installation of untrusted packages - "The action would require the installation of packages from not authenticated sources."
I’ve installed Ubuntu lots of times before and this was the first time that I encountered this issue/error. I Googled the error message and found the very short and very simple solution from the Ubuntu forums. I’m sharing this in case someone might encounter the same problem and get the “requires installation of untrusted packages” error while updating Ubuntu.
Here’s how to do it:
1. On your Ubuntu panel, click on System > Administration > Update Manager.

2. Look for Settings at the bottom left corner of the Update Manager window, click on it.

3. On the Software Sources window, click on the Ubuntu Software tab.
4. Under Downloadable from the Internet, put a check on Source Code.

5. Close the window and the changes will be applied.
6. On Update Manager, click on Install Updates.
That should do it and you should now be able to download and install the available updates for your system. In my case, the Source Code option was not ticked/checked. After I put a check on it and clicked on Install Updates, the “requires installation of untrusted packages” error went away.
Hope this short and simple tutorial will help you if you encounter the same problem while updating Ubuntu. If you know of a different way to solve this problem when updating Ubuntu, please feel free to share it with us via the comment section. Thank you!











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October 24th, 2012 at 10:51 AM
Thank you so much. It works…
May 28th, 2012 at 2:02 PM
I’ve tried the following instead.
from command-line:
sudo apt-get update
sudo apt-get upgrade
also have worked for me.
September 5th, 2012 at 2:35 PM
@Sky WalkeR Worked, thanks.
April 19th, 2012 at 4:56 AM
Works as intended ! Thanks !
March 23rd, 2012 at 3:03 AM
I did the same thing Peiter did; I changed from U.S. to main server-worked! Wouldn’t have known to do it if not for this page-thanks!
March 19th, 2012 at 9:02 AM
still not working
actually after i shifted it to the main server it is showing no more updates
March 15th, 2012 at 10:21 AM
i’ve checked the sourcecode box tried main server and every server on the list i also tried checking for best server and i still get this error:
“Requires installation of untrusted packages
The action would require the installation of packages from not authenticated sources.”
details:
libavcodec52 libavutil50 libfaac0 libmjpegtools-1.9 libmp3lame0
libquicktime1 libswscale0 libvpx0 libx264-112 libx264-118
please help thanks UBUNTU FOREVER !
KARMAKID
March 14th, 2012 at 12:02 PM
thanks alot dude
February 19th, 2012 at 3:01 AM
also look in details tab to see if any other programs are conflicting with the update. I had to uninstall wine in order to stop recieving the error
February 10th, 2012 at 6:19 PM
I had to do like Pieter said and change ‘Download From:’ Mine was set to ‘United States’ I changed it to ‘Main Server’ and all is good thanks
Pieter Says:
July 18th, 2011 at 5:23 AM
neo, I had the same problem. I changed ‘Download from’ from a local / national server to ‘Main server’. After that, I could check the ‘Source code’ checkbox.
January 25th, 2012 at 12:47 AM
I was facing the same problem, updating the system alongside Windows 7..It really helped..Thanks a lot buddy… :)
December 23rd, 2011 at 2:41 PM
thank you so so sooo much! it does work. still have problems with activating wireless driver though, ugh..
December 20th, 2011 at 12:37 PM
Can’t find the update manager in 11.10 unfortunately, so still stuck.
December 20th, 2011 at 12:38 PM
Found it now, but it won’t let me check the ‘source code’ box
January 4th, 2012 at 4:37 AM
You have to switch “download from:” to either “main server” or “united states” (which is probably the same :)
After switching, I was able to select it and it worked out for me.
I hope it helps
January 7th, 2013 at 1:37 PM
Switching the source did it. Thank you!
January 17th, 2012 at 11:17 AM
Me too. I can not check the box.
January 18th, 2012 at 10:43 PM
choose the “main server”, not the ‘country’ server. then, the source code will authenticate and all available options will be seen/available
October 31st, 2011 at 5:16 AM
It helps me, thank you very much!
October 26th, 2011 at 1:41 PM
dear,dearer, dearest friend,
no words enough 2 thank u 4 the precious help . It works pretty well
October 16th, 2011 at 7:44 AM
just change in software sources where it say download from to
main server
October 16th, 2011 at 7:41 AM
just change in software sources where it say download from main server
September 15th, 2011 at 7:55 AM
Excellent! You’re D man.
September 12th, 2011 at 5:24 AM
thanks so much … u have saved me a lot.
September 8th, 2011 at 3:09 PM
Thanks a lot! It has bothered me to no ends. Your technique worked beautifully.
September 1st, 2011 at 9:30 PM
is there a way to do this via command line? I run a server and generally ssh into it….
August 23rd, 2011 at 1:43 PM
I can make the checkbox orange, but it won’t let me ‘check’ the check box. Now what?
Thanks
September 19th, 2011 at 9:21 AM
thanks a lot dude, it was really helpfull
September 19th, 2011 at 9:26 AM
dave, i had the same problem, but it started updating properly anyways. So i guess jus making d box orange is enough. Try updating once.
August 5th, 2011 at 11:27 AM
Thanks a lot dude. This solved my problem :)
July 25th, 2011 at 3:51 PM
thank you dude…
July 24th, 2011 at 9:32 PM
thnx bro……god bless u. peace
July 24th, 2011 at 4:04 AM
dude..u made my day
July 18th, 2011 at 5:23 AM
neo, I had the same problem. I changed ‘Download from’ from a local / national server to ‘Main server’. After that, I could check the ‘Source code’ checkbox.
July 15th, 2011 at 1:25 AM
Thank you much boss..
June 17th, 2011 at 6:11 AM
Many thanks sir. you solved my big problem
May 26th, 2011 at 1:25 AM
it really worked successful. thanx a looootttttttt
April 9th, 2011 at 3:34 AM
Thanks :)
April 5th, 2011 at 8:19 AM
yes, it has really work for me. you are genius. thank you
April 2nd, 2011 at 4:10 AM
Thanks it working
January 31st, 2011 at 11:06 AM
It works for me… :)
January 28th, 2011 at 4:28 PM
problem fixed. i used “ubuntu tweak” for this. i also got new repositories added, the real google chrome is now added, not the chromium one. plus skype :)
January 24th, 2011 at 10:57 AM
It worked for me .. Thanks
January 22nd, 2011 at 9:08 PM
im using ubuntu 10.10 now. it didnt work though :( i only get a minus [-] tickbox. cant set it to check. any help? the one bugging my update was the “nautilus”.