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In Ubuntu 16.04, I tried to open the software & updates. But didn't open. If I click to software & updates icon,It will show on launcher pad and blinking around 15sec. And automatically closing.

The instructions offered were GREAT! But, it took a while to understand EXACTLY The suggested steps. Therefore, I'm restating them for newbees like me.

  1. Open the terminal using Ctrl + Alt + t.
  2. type sudo apt update and press Enter.
  3. type sudo apt upgrade and press Enter.
  4. you will answer the question by typing or selecting Y and press Enter.
  5. now, please wait a long time while a process goes on. A bar shows slow progress up to 100%.
  6. restart the computer.

The results were GREAT. It solved my Ubuntu software problem, the SW update problem, continuous "system error" messages, AND a failed network that I had painfully constructed. Remember, I'm a NEWBEE and wish I knew more about Unix.

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    Open the terminal using Ctrl + Alt + t then type sudo apt update && sudo apt upgrade -y and press Enter after that try to open it and see if it stays open Sep 8, 2017 at 5:47
  • I don't know if @George's suggestion will help but it's worth a try. You'll probably have to use Ctrl + Alt + T to open the Terminal. Then keep the Terminal open and try running Software & Updates again. if it fails again, type software-properties-gtk in the Terminal and press Enter. This will probably also fail to open Software & Updates but the output may be helpful. Select all text in the Terminal from the beginning of the line on which you typed the first command to the end of the output from software-properties-gtk, copy it to the clipboard, and edit your question to add it. Sep 8, 2017 at 5:54
  • Sorry.This is not getting.I already tried this commands.But didn't work.
    – favasaman
    Sep 8, 2017 at 5:58
  • OK then do as Eliah has said and post the output into your question... Sep 8, 2017 at 6:03
  • Sorry George ,That also didn't work. I tried to the terminal.It is properly run and not showing any issue.But my issue didn't fix it .
    – favasaman
    Sep 8, 2017 at 6:18

2 Answers 2

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I fixed my issues with the help of Eliah and George. They gave some hints. So I can clear this issues. I said thanks to both of them.

These are commands so I can fix the issue.

The following command is used as change the access permissions to file system objects (files and directories):

sudo chmod u+s /usr/lib/dbus-1.0/dbus-daemon-launch-helper

Restart the dbus services:

sudo service dbus restart

If you open with the terminal and type software-properties-gtk, sometimes it will show some error like this:

"permissions of the setuid helper is not correct"

Then use above commands.

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New install of Software & update helped me

sudo apt-get install software-properties-gtk

Now reinstall all the supporting packages:

sudo aptitude reinstall apt apt-utils aptdaemon aptdaemon-data update-manager update-manager-core dbus

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