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I found these errors while using sudo apt-get update. I tried to resolve this issue by adding repository using sudo command but it did not resolve yet. It will be helpful if anyone can solve this issue.

Err:26 http://ppa.launchpad.net/marutter/c2d4u/ubuntu artful Release                                                                                                                                       
  404  Not Found

Err:27 http://ppa.launchpad.net/ubuntu-desktop/ubuntu-make/ubuntu artful Release                                                                                                                           
  404  Not Found

Err:28 http://ppa.launchpad.net/webupd8team/gnome3/ubuntu artful Release                                                                                                                                   
  404  Not Found
Zanna
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Abhishak Varshney
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    For the first one, have a look at the site in a browser, when you get to http://ppa.launchpad.net/marutter/c2d4u/ubuntu/dists/ you'll note there is no Artful directory - ie. 17.10 isn't supported for the PPA (my answer is worded this way as I read it as you were seeking help in solving issue, rather than quick fix; some PPAs only support LTS releases) – guiverc Apr 23 '18 at 03:13

1 Answers1

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By example in 'how to resolve errors', for the first one, have a look at the site in a browser, when you get to

http://ppa.launchpad.net/marutter/c2d4u/ubuntu/dists/

you'll note there is no "artful" directory - ie. 17.10 isn't supported for this PPA which results in the error you got. Artful is the code name for the 17.10 release

(my answer is worded this way as I read it as you were seeking help in solving issue, rather than quick fix; some PPAs only support LTS releases, or many other reasons)

guiverc
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  • How can I resolve this issue. – Abhishak Varshney Apr 23 '18 at 04:22
  • All three PPAs listed don't support your release of Ubuntu, so you need to find another source/solution for whatever you want/need. Your question asked about the PPA not working and how to resolve; those PPAs don't support Artful Aardvark so can't be used with Artful. Any more requires me to know why you added them which you didn't provide as those PPAs aren't intended to work with 17.10. It may be you could download (wget) whatever you want intended for another release, and install it manually, but this has drawbacks (you have to manually check for updates...) etc – guiverc Apr 23 '18 at 05:18