W: Failed to fetch http://ppa.launchpad.net/docky-core/stable/ubuntu/dists/raring/main/source/Sources  404  Not Found W: Failed to fetch http://ppa.launchpad.net/docky-core/stable/ubuntu/dists/raring/main/binary-i386/Packages  404  Not Found E: Some index files failed to download. They have been ignored, or old ones used instead.
831
PPA seems to be constantly offline. Whenever I use sudo apt-get update, this error is shown:  W: Failed to fetch http://ppa.launchpad.net/ 404  Not Found   How do I fix these errors?
95
The error I am having when trying to update my package list.  W: GPG error: http://download.opensuse.org ./ Release: The following signatures were invalid: KEYEXPIRED 1436387333  W: Failed to fetch http://ppa.launchpad.net/samrog131/ppa/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found  E: Some index files failed to download. They have been ignored, or old ones used instead.
33256
I can get Ubuntu mainline kernels from  - is there a way to add it to my repository list the same as regular Launchpad PPAs?
96964
I'm trying to update from ubuntu 12.10 lately but I keep getting the "Failed to fetch" error.  W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/quantal-security/Release  Unable to find expected entry 'independent/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)  W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/quantal/Release  Unable to find expected entry 'independent/source/Sources' in Release file (Wrong sources.list entry or malformed file)  W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/quantal-updates/Release  Unable to find expected entry 'independent/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)  W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/quantal-backports/Release  Unable to find expected entry 'independent/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)  E: Some index files failed to download. They have been ignored, or old ones used instead.   I changed the server and deleted the source lists from /var/lib/apt/lists/ like some answers say but still. This is really annoying.
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?
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:~$
29545
I have recently upgraded to Precise and had some errors. It seems to be quite random and with differences in the error reports. I have duly sent the reports hoping the system will have found the problem and sorted itself out. After the second error I am following the wizards (software...) advice and seeking help. The 1st time it happened I jotted down the following:  ExecutablePath /usr/lib/tracker/tracker-extract LaunchPad bug 950765 AMD64   The second time the following:  ExecutablePath /usr/share/appart/appart-gpu-error-intel.py "Possible GPU hang........" sandybridge-m-gt2 LaunchPad bug 981261   If there is anyone that can help it is much appreciated. I did not really want to upgrade at this stage, but was forced to due to the latest version of python-numpy in precise. You win some, you loose some....  Jacques   I am using a Pavilion dv6 notebook and 64bit ubuntu 12.04 LTS
64915
I'm trying to install phpMyAdmin using sudo apt-get install phpmyadmin but encountering this error  Err http://gb.archive.ubuntu.com/ubuntu/ precise-updates/main mysql-common all 5.5.34-0ubuntu0.12.04.1   404  Not Found [IP: 194.169.254.10 80] Err http://security.ubuntu.com/ubuntu/ precise-security/main mysql-common all 5.5.34-0ubuntu0.12.04.1   404  Not Found [IP: 91.189.91.15 80] Err http://security.ubuntu.com/ubuntu/ precise-security/main libmysqlclient18 i386 5.5.34-0ubuntu0.12.04.1   404  Not Found [IP: 91.189.91.15 80] Err http://security.ubuntu.com/ubuntu/ precise-security/main mysql-client-core-5.5 i386 5.5.34-0ubuntu0.12.04.1   404  Not Found [IP: 91.189.91.15 80] Err http://security.ubuntu.com/ubuntu/ precise-security/main mysql-client-5.5 i386 5.5.34-0ubuntu0.12.04.1   404  Not Found [IP: 91.189.91.15 80] Err http://security.ubuntu.com/ubuntu/ precise-security/main mysql-client all 5.5.34-0ubuntu0.12.04.1   404  Not Found [IP: 91.189.91.15 80] Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.5/mysql-common_5.5.34-0ubuntu0.12.04.1_all.deb  404  Not Found [IP: 91.189.91.15 80] Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.5/libmysqlclient18_5.5.34-0ubuntu0.12.04.1_i386.deb  404  Not Found [IP: 91.189.91.15 80] Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.5/mysql-client-core-5.5_5.5.34-0ubuntu0.12.04.1_i386.deb  404  Not Found [IP: 91.189.91.15 80] Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.5/mysql-client-5.5_5.5.34-0ubuntu0.12.04.1_i386.deb  404  Not Found [IP: 91.189.91.15 80] Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.5/mysql-client_5.5.34-0ubuntu0.12.04.1_all.deb  404  Not Found [IP: 91.189.91.15 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?   What could be the issue here? How do I solve it?
952
When updating, I get the following error message:   W: The repository 'http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial Release' does not have a Release file.   Here, I find another statement on this error:   This recommends removing certain PPAs; and, I'm not sure if I should do that since it might mean not getting the updates that I need.    Is this what I should do?
90911
There is an error sign on my Ubuntu panel which states the error given in the title. I used sudo apt-get update but it gave me no errors. However the error sign persists.   How do I fix this?
123068
is a fantastic repository of packages, and one that I use often to install packages that are not included in the main repository. Thus far, I've always simply browsed to a package page (e.g. ) and manually downloaded the Deb file, which kicks off the Ubuntu Software Center and lets me easily install the package.  It would be even cooler if I could use LaunchPad.net as a regular apt source, i.e. by doing something like this:  echo 'deb https://launchpad.net/ubuntu natty amd64' | sudo tee -a /etc/apt/sources.list   Does anyone know what the correct sources line would be?
100553
I am unable to apt-get install any packages because E: Package '&lt;package name&gt;' has no installation candidate. Unlike the other similarly named questions, I am using debian and I have not been able to get any packages to work due to the same error. apt is still able to list repositories. I have updated, upgraded, rebooted, and repeated after my attempts at fixing sources.list, but nothing has worked.  For example,  $ sudo apt-get install nodejs Reading package lists... Done Building dependency tree        Reading state information... Done Package nodejs is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source  E: Package 'nodejs' has no installation candidate   Running $ find /etc/apt/ -path *.list | xargs cat produces:  #------------------------------------------------------------------------------# #                   OFFICIAL DEBIAN REPOS                     #------------------------------------------------------------------------------#  ###### Debian Main Repos deb http://ftp.us.debian.org/debian/ jessie main contrib non-free  deb-src http://ftp.us.debian.org/debian/ jessie main contrib non-free   ###### Debian Update Repos deb http://security.debian.org/ jessie/updates main contrib non-free  deb http://ftp.us.debian.org/debian/ jessie-proposed-updates main contrib non-free  deb-src http://security.debian.org/ jessie/updates main contrib non-free  deb-src http://ftp.us.debian.org/debian/ jessie-proposed-updates main contrib non-free    deb http://archive.raspberrypi.org/debian/ jessie main ui # Uncomment line below then 'apt-get update' to enable 'apt-get source' deb-src http://archive.raspberrypi.org/debian/ jessie main ui deb https://dev2day.de/pms/ jessie main deb http://dl.bintray.com/openhab/apt-repo stable main
49079
What reasons are there for applications in Ubuntu not being the most up-to-date, and why are some applications not available, in its  repositories?
507
There are now errors when updating and I cannot install most software due to a corrupted  /etc/apt/sources.list   file. Is there a copy I can download to replace it?  The file would be for Ubuntu 12.04 (Final Beta) in the United States.
13471
Like , I can't run apt-get update sometimes. Restarting or waiting for a while makes the problem go away. I never have issues pinging or visiting the respective URLs in a browser.  I've tried every up-voted answer to no avail. What is apt doing that is so different to ping or my browser? For example, when I run apt-get update I see this:  Err:1 https://download.docker.com/linux/ubuntu xenial InRelease   Could not resolve host: download.docker.com Err:2 https://deb.opera.com/opera-stable stable InRelease   Could not resolve host: deb.opera.com Err:3 http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu xenial InRelease   Could not resolve 'ppa.launchpad.net' Err:4 http://ppa.launchpad.net/saiarcot895/myppa/ubuntu xenial InRelease   Could not resolve 'ppa.launchpad.net' Err:5 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease   Could not resolve 'ppa.launchpad.net' Err:6 http://repository.spotify.com stable InRelease   Could not resolve 'repository.spotify.com' Err:7 http://dl.google.com/linux/chrome/deb stable InRelease   Could not resolve 'dl.google.com' Err:8 http://archive.ubuntu.com/ubuntu xenial InRelease   Could not resolve 'archive.ubuntu.com' Err:9 http://archive.ubuntu.com/ubuntu xenial-updates InRelease   Could not resolve 'archive.ubuntu.com' Err:10 http://archive.ubuntu.com/ubuntu xenial-backports InRelease   Could not resolve 'archive.ubuntu.com' Err:11 http://archive.ubuntu.com/ubuntu xenial-security InRelease   Could not resolve 'archive.ubuntu.com' Reading package lists... Done W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/InRelease  Could not resolve 'archive.ubuntu.com' W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-updates/InRelease  Could not resolve 'archive.ubuntu.com' W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-backports/InRelease  Could not resolve 'archive.ubuntu.com' W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-security/InRelease  Could not resolve 'archive.ubuntu.com' W: Failed to fetch https://download.docker.com/linux/ubuntu/dists/xenial/InRelease  Could not resolve host: download.docker.com W: Failed to fetch http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu/dists/xenial/InRelease  Could not resolve 'ppa.launchpad.net' W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/InRelease  Could not resolve 'dl.google.com' W: Failed to fetch https://deb.opera.com/opera-stable/dists/stable/InRelease  Could not resolve host: deb.opera.com W: Failed to fetch http://ppa.launchpad.net/saiarcot895/myppa/ubuntu/dists/xenial/InRelease  Could not resolve 'ppa.launchpad.net' W: Failed to fetch http://repository.spotify.com/dists/stable/InRelease  Could not resolve 'repository.spotify.com' W: Failed to fetch http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu/dists/xenial/InRelease  Could not resolve 'ppa.launchpad.net' W: Some index files failed to download. They have been ignored, or old ones used instead.   Running ping download.docker.com:  PING d2h67oheeuigaw.cloudfront.net (52.85.41.233) 56(84) bytes of data. 64 bytes from server-52-85-41-233.mel50.r.cloudfront.net (52.85.41.233): icmp_seq=1 ttl=251 time=18.8 ms 64 bytes from server-52-85-41-233.mel50.r.cloudfront.net (52.85.41.233): icmp_seq=2 ttl=251 time=18.4 ms 64 bytes from server-52-85-41-233.mel50.r.cloudfront.net (52.85.41.233): icmp_seq=3 ttl=251 time=19.5 ms   And visiting the page in my browser works fine. How can I make apt-get "just work"?  Here is the contents of my /etc/apt/resolv.conf:  # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 127.0.1.1 search home.gateway
56594
I have tried to find some PPA's for Ubuntu 14.04 but didn't find any. So I tried to install the package for previous releases, with no luck and a lot of dependencies issues.
36090
I have recently installed ubuntu 11.10. But when i try to install a software it tries to 'updating cache' but after a while, it stops, showing:                            Failed to download repository information                           Check your internet connection   so, now i am totally unable to install any software in my ubuntu.  Please,let me know how to solve the problem.