I am running 13.04.  I opened Software Updater. It started OK and then came up with the following message: "Software updates are no longer provided for Ubuntu 13.04 " followed by "To stay secure, you should upgrade to Ubuntu 13.10"  Is this an error? What is happening?   Please can someone explain what is going on. I have never had this in any previous edition of Ubuntu and it has always been possible to run and update a system two releases back, let alone LTS versions.
1160
Recently I have installed an older version of Ubuntu on my old machine. Whenever I try to install any software, I get an error saying it couldn't be found:  $ sudo apt-get install vlc Reading package lists... Done                Building dependency tree        Reading state information... Done     E: Couldn't find package vlc
96297
I normally use Software Updater to keep the system updated. However I occasionally will run apt-get upgrade from the terminal and I've notice there are times when Software Updater says there are no available updates but apt-get update shows some updates to packages.  I haven't been able to figure out why.
69931
I am not looking for a workaround or a hack.  I am just confused.  14.04.1 has been released now for a week, and one of my machines which is on 12.04, and another one which is on 14.04 both don't have the upgrade options.  I see there is a 14.04.5 release on august 7th but I am not sure what a candence event is.    It is hard to believe that it is not an issue that is going to be resolved otherwise I would hope this would be posted on the Ubuntu blog.  I cant be the only one on the last LTS waiting for it to update so I can finally go to the latest kernel and properly use my core i7 graphics.
100103
I had been trying to update my Ubuntu13.04 via 'software updater'. The updater messages that the following needs to be installed. Press continue to install When I press continue , a window appears as shown in the attachment. There message appears: requires installation of untrusted packages   On pressing O.K. button, the window disappears and nothing happens. How to then update my system with the updates that the software updater is reflecting?
58661
I'm really struggling to update my ubuntu os... I've got three different versions of it on my pc namely Blackbox, twm &amp; Kde/ kubuntu. However I can't access my software updater from any of them neither will my normal auto updates show.  Any suggestions please
76609
I know I've seen this documented somewhere before, but what's the option to keep update-manager from prompting for updates except for LTS-to-LTS releases?
38989
Upon my observation, seems new packages will first appear in security.ubuntu.com, but if you upgrade later, they will appear in XX.archive.ubuntu.com (depends on your config),  Was that true ?
106457
The whole update process seems somewhat confusing to me.  I can understand the need to run sudo apt-get update prior to installing another package, but, what is the difference in running update from the command-line and using the Synaptic package manager for updates and/or the the Auto-updater.  If there is no difference, why do we have all three?
29497
After I installed Ubuntu , I cannot update any software with the error message "failed to download package files". After having googled, I have tried:   sudo apt-get update sudo apt-get upgrade changed to another sources   But I still got the same error message. And there is no problem with internet connection as i can connect to internet using Firefox in Ubuntu.  Any ideas?
92201
I am getting Ubuntu base update almost every day. This seems strange to me. What am I missing?   (I am using Ubuntu 14.04 LTS)
102776
Why is it that Ubuntu only support a version for a limited time? Since I have been on this site I have seen many references to particular versions not being supported. What does it actually mean? After this time must a user just use the OS in the state it is in at the date that support ends? Does this mean no more package updates are available?   Or when this support date has elapsed, should the user then abandon the version and install a newer version instead? I am slightly confused with the difference between Ubuntu and Linux here (with Windows you use it until you buy the latest version) and would be grateful if someone could explain the Ubuntu 'lifecycle' (if that is a suitable word). Thanks in advance for your help.
10540
When I log into my web server via SSH I see the information:  88 packages can be updated. 80 updates are security updates   I tried apt-get update then apt-get upgrade but each time I log in I still see the message about updates. How do I install them?
81301
I answered  about do-release-upgrade not allowing an upgrade of 14.10 to 15.04 only to 15.10, I assumed it was due to 15.04 being end of life.  A user (@xangua ) posted that it was not possible to skip a release with do-release-upgrade, so I looked in to this information by running the command on my 14.04 box, but this is where the confusion began.  My 14.04 wants to upgrade straight to 15.04?   Of course this invalidates my answer as 15.04 is end of life, but why does this command seem to be skipping versions, if not based on end of life?   There is no indication any thing from 14.10 is being downloaded by the upgrade and software-updater says Ubuntu 15.04 is now available for download, some clarification of this would be great.
83188
I've got an Ubuntu 8.04 LTS server.  There are several packages which are "kept back" ("the following updates have been kept back") when I do an apt-get upgrade.  It's my understanding that I can do an apt-get dist-upgrade to upgrade these packages, but I have a few concerns:   If I do a dist-upgrade, will I be upgrading from 8.04 to higher version (8.10 I guess)?  If so, what's the point of 8.04 being "Long Term Support" (LTS)? Is this a "dangerous" process?  I'm assuming that packages are kept back because there are new packages that they depend on.  Does dist-upgrade simply pull the new packages and do a fairly straightforward upgrade, or are there caveats to look into?
123285
What happens if there is a security problem in a package in the universe repository four years after the 12.04 LTS release; will the package be updated from upstream, patched, or left alone?  It's my understanding that the "5 years of support &amp; security updates" applies only to the core of Ubuntu -- anything in Main repository.  Not for things in the Universe repository.    For a more specific example -- if I install Ruby now, and want to use it for the next several years on 12.04 and it has a security vulnerability; while this might be patched in the upstream (so I could always download the latest from their website and compile it myself or use a PPA), will this upstream fix be migrated into the precise package repositories? What about backports?
82717
Not a problem, but have been seeing questions recently of people not being offered upgrade from 18.04 to 20.04.  I thought these upgrades were offered back in June.  I upgraded to 20.04 from 19.10 and this was offered back in May.  Imagine that different versions paths have different schedules, but google does not help explaining(that I found).  Does someone know the schedules?
80237
I'm using 17.04 ( Clean Install ), and as far as I remember, every try to install any sofware- it fails with that error code.  I tried sudo apt-get update &amp;&amp; apt-get upgrade and problem persists.  any idea why?   edit: Using software Updater gave this result :   edit : output of update  guy@LG-LAPTOP:~$ sudo apt-get update &amp;&amp; apt-get upgrade [sudo] password for guy:  Ign:1 http://il.archive.ubuntu.com/ubuntu zesty InRelease Ign:2 http://il.archive.ubuntu.com/ubuntu zesty-updates InRelease               Ign:3 http://il.archive.ubuntu.com/ubuntu zesty-backports InRelease             Err:4 http://il.archive.ubuntu.com/ubuntu zesty Release                           503  Service Unavailable Get:5 http://security.ubuntu.com/ubuntu zesty-security InRelease [89.2 kB]      Err:6 http://il.archive.ubuntu.com/ubuntu zesty-updates Release                   503  Service Unavailable Get:7 http://archive.canonical.com/ubuntu zesty InRelease [10.2 kB]             Err:8 http://il.archive.ubuntu.com/ubuntu zesty-backports Release                 503  Service Unavailable Get:9 http://archive.canonical.com/ubuntu zesty/partner Sources [1,416 B]       Get:10 http://archive.canonical.com/ubuntu zesty/partner amd64 Packages [1,616 B] Get:11 http://archive.canonical.com/ubuntu zesty/partner i386 Packages [1,612 B] Get:12 http://archive.canonical.com/ubuntu zesty/partner Translation-en [708 B] Get:13 http://security.ubuntu.com/ubuntu zesty-security/main amd64 DEP-11 Metadata [11.7 kB] Get:14 http://security.ubuntu.com/ubuntu zesty-security/main DEP-11 64x64 Icons [9,219 B] Get:15 http://security.ubuntu.com/ubuntu zesty-security/universe amd64 DEP-11 Metadata [14.4 kB] Get:16 http://security.ubuntu.com/ubuntu zesty-security/universe DEP-11 64x64 Icons [31.0 kB] Reading package lists... Done                                          E: The repository 'http://il.archive.ubuntu.com/ubuntu zesty Release' does no longer have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://il.archive.ubuntu.com/ubuntu zesty-updates Release' does no longer have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://il.archive.ubuntu.com/ubuntu zesty-backports Release' does no longer have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. guy@LG-LAPTOP:~$    output of apt get  guy@LG-LAPTOP:~$ sudo apt-get install putty Reading package lists... Done Building dependency tree        Reading state information... Done The following additional packages will be installed:   putty-tools Suggested packages:   putty-doc The following NEW packages will be installed:   putty putty-tools 0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. Need to get 661 kB of archives. After this operation, 2,713 kB of additional disk space will be used. Do you want to continue? [Y/n]  Err:1 http://il.archive.ubuntu.com/ubuntu zesty/universe amd64 putty-tools amd64 0.67-3   503  Service Unavailable Err:2 http://il.archive.ubuntu.com/ubuntu zesty/universe amd64 putty amd64 0.67-3   503  Service Unavailable E: Failed to fetch http://il.archive.ubuntu.com/ubuntu/pool/universe/p/putty/putty-tools_0.67-3_amd64.deb  503  Service Unavailable E: Failed to fetch http://il.archive.ubuntu.com/ubuntu/pool/universe/p/putty/putty_0.67-3_amd64.deb  503  Service Unavailable E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? guy@LG-LAPTOP:~$