Internet connection is fine but my Ubuntu Software center cannot download anything giving me this error: "Failed to download package files"

Try

first run the following command from a terminal
sudo apt-get update

check for any errors in the output. If you find any issue report here.

If the above command runs fine then again try to install a package from software center

Seems to be working now. Thank you!

rob

On Sat, Dec 10, 2011 at 12:20 PM, Lalatendu Mohanty <
<email address hidden>> wrote:

> Your question #181511 on software-center in Ubuntu changed:
>
> https://answers.launchpad.net/ubuntu/+source/software-center/+question/181511
>
> Lalatendu Mohanty posted a new comment:
> Try
>
> first run the following command from a terminal
> sudo apt-get update
>
> check for any errors in the output. If you find any issue report here.
>
> If the above command runs fine then again try to install a package from
> software center
>
> --
> You received this question notification because you asked the question.
>

--

   When I came back to Dublin I was court martialed in my absence and
   sentenced to death in my absence, so I said they could shoot me in my
   absence. - *Brendan F Behan*

Thanks Lalatendu Mohanty, that solved my question.

I'm having the same issue and when i put the command in terminal i get this error

W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://extras.ubuntu.com oneiric Release: The following signatures were invalid: BADSIG 16126D3A3E5C1192 Ubuntu Extras Archive Automatic Signing Key <email address hidden>

W: GPG error: http://us.archive.ubuntu.com oneiric Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <email address hidden>
W: GPG error: http://us.archive.ubuntu.com oneiric-backports Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <email address hidden>
W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/oneiric/Release

W: Some index files failed to download. They have been ignored, or old ones used instead.

I also get an error from update manager as follows :

Requires installation of untrusted packages

The action would require the installation of packages from not authenticated sources.
details
libgdata-common libgdata13

any suggestions?

This is the error I'm getting after I ran sudo apg-get update

W: GPG error: http://archive.canonical.com oneiric Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <email address hidden>
W: GPG error: http://deb.opera.com stable Release: The following signatures were invalid: BADSIG AAFF4A5B336064B5 Opera Software Archive Automatic Signing Key 2012 <email address hidden>
W: GPG error: http://archive.canonical.com lucid Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <email address hidden>
W: GPG error: http://in.archive.ubuntu.com oneiric Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <email address hidden>
W: GPG error: http://in.archive.ubuntu.com oneiric-backports Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <email address hidden>

I tried everything you said...but if i try to update without using the terminal...I get this error requires installation of untrusted packages...please help me out

I have the same problem. When I run 'sudo apt-get update' I get the following error:

W: GPG error: http://gb.archive.ubuntu.com oneiric Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <email address hidden>
W: Duplicate sources.list entry http://archive.canonical.com/ubuntu/ oneiric/partner i386 Packages (/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_oneiric_partner_binary-i386_Packages)

Can anyone let me know how to solve this? Thanks!

I ran 'sudo apt-get update' a couple more times and now all I get is the first GPG error:

W: GPG error: http://gb.archive.ubuntu.com oneiric Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <email address hidden>

I ran the command in terminal and this is what I get
W: GPG error: http://archive.ubuntu.com oneiric Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <email address hidden>

12_2_12 <email address hidden>
found terminal shell by serching for name in files.
performed sudo apt get as in notes downloades 1,220 kilobytes after that did not get
check internet message.
This also involved a foreign package warning but at download which also stoped must be somehow coupled.
Thank you for the help.