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While updating on Ubuntu 16.04 I am getting the error 

E: Failed to fetch http://ppa.launchpad.net/s-lagui/ppa/ubuntu/dists/xenial/main/binary-amd64/Packages  404  Not Found

Can anyone help me to find out what it is?

Zanna
  • 70,465
HIRANSHA M
  • 1
  • You added a PPA that does not contain packages for 16.04. Remove it. – Pilot6 Jul 14 '17 at 13:33
  • W: The repository 'http://ppa.launchpad.net/s-lagui/ppa/ubuntu xenial Release' does not have a Release file. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. E: Failed to fetch http://ppa.launchpad.net/s-lagui/ppa/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead. THIS IS THE FULL REPORT.. – HIRANSHA M Jul 14 '17 at 13:39
  • Just remove that PPA. – Pilot6 Jul 14 '17 at 13:42

1 Answers1

0
  • Open Software & Updates
  • locate the ppa for s-lagui and click once on it
  • click the Edit button
  • change Distribution from xenial to vivid
  • click OK
  • close Software & Updates and reload database
  • if the application at that ppa no longer works in xenial, delete that ppa

enter image description here

heynnema
  • 70,711
  • Why do you think the vivid will install? – Pilot6 Jul 14 '17 at 14:20
  • @Pilot6 vivid is the last ppa repo available by the author. Whatever software the OP is looking for would be there... now whether that app still works under xenial may be another story, but usually they will. I'll update my answer to include that info. – heynnema Jul 14 '17 at 14:22
  • Dependencies may be wrong. – Pilot6 Jul 14 '17 at 14:23
  • @Pilot6 true... but then it won't install, or it won't run... but the 404 error message will be gone. – heynnema Jul 14 '17 at 14:24
  • Is it better to have applications that won't install / run, or to remove the PPA – Charles Green Jul 15 '17 at 15:47
  • @CharlesGreen The software that was/is at that old PPA may be the only place that it's still available. I have many such PPA's in my own configuration that are for older Ubuntu configurations than my zesty, and I may need to reload one, some day. My way leaves access to the software a possibility, gets rid of the 404 error, and causes no harm especially if the user never needs the software from that PPA. For example, my PPA for dropbox is for xenial, that's the latest, and if I deleted that PPA, I might lose access to reinstalling that app. – heynnema Jul 15 '17 at 16:07