Can't play movies on Amazon Prime or update Chrome to a newer version

Support & Help Requests
21

I made an attempt to follow your suggestion. Here's what I did:

From top menu: System => Administration => Software & Updates
In the list found on the "Other Software" tab, I unchecked the PPA boxes.

Ubuntu then attempts to update the "cache" and tries to download something from old-releases, eventually throwing the following error:

Failed to download repository information

22

I removed all the files in /etc/apt/sources.list.d and reran:

"sudo apt-get update"

Hit:1 http://old-releases.ubuntu.com/ubuntu artful InRelease
Ign:2 http://old-releases.ubuntu.com/ubuntu artful.updates InRelease
Hit:3 http://old-releases.ubuntu.com/ubuntu artful-updates InRelease
Hit:4 http://old-releases.ubuntu.com/ubuntu artful-backports InRelease
Err:5 http://old-releases.ubuntu.com/ubuntu artful.updates Release
  404  Not Found [IP: 91.189.88.153 80]
Reading package lists... Done
E: The repository 'http://old-releases.ubuntu.com/ubuntu artful.updates Release' does not 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.
23

Please check the following page for instructions on what to do to solve your problem. Good luck pluviosilla.

24

The syntax looks wrong on 2 of your sources.

Try changing http://old-releases.ubuntu.com/ubuntu artful.updates InRelease to:

Index of /ubuntu artful-updates InRelease

and

http://old-releases.ubuntu.com/ubuntu artful.updates Release to:

Index of /ubuntu artful-updates Release

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