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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