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1

Try this. Just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command(s) below: sudo gedit /usr/share/polkit-1/actions/org.freedesktop.udisks2.policy When it opens look for <allow_active>auth_admin_keep</allow_active> and change it to <allow_active>yes</allow_active>


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Since PolicyKit seems to be installed and apt-get is working, try the following command sudo apt-get --purge --reinstall install software-center software-properties-common software-properties-gtk


-1

I solved my problem with this program: microsoft-isa-proxy-authentication Microsoft ISA Proxy authentication in Ubuntu How to solve "407 Proxy Authentication Required" error in Ubuntu ? This was one question I was behind from last few days. Use CNTLM, that's the best answer I got. CNTLM will make your Ubuntu server act as a proxy server and in behind ...


0

It looks like you still don't authenticate properly. There may be a number of reasons for that - like special characters in your password, where it may be better to replace them by their code, I think. If you have windows proxy server - cntlm might help. I think actually that if you use package manager and give credentials there in the config - it might ...


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Another way is to add options "--force-yes" to your package block


2

For sometime now, sudoers has not been the only way to control user privileges on Ubuntu and other Linux distros. Polkit allows more fine-grained control of privileges. When you use GParted or Synaptic on a recent version of Ubuntu, authentication is usually done using polkit. To set an user (say Y) as an administrator for polkit, create a file in ...


1

There is no such thing as default user for authentication. Its just that by default, the user created during installation of Ubuntu(in your case, X) is an administrator i.e., it is attached to the sudo group. So when you are performing elevated tasks like installation of softwares, you are asked for the password of the user in the sudo group. Now when you ...


-1

Check the values PubkeyAuthentication yes AuthorizedKeysFile %h/.ssh/authorized_keys Subsystem sftp /usr/lib/openssh/sftp-server in /etc/ssh/sshd_config


0

The following command uses my pubkey and does not ask for a password even though I have both a valid password and valid pubkey for the remote host. Also make sure you don't have a password set in .ssh/config just to be safe. rsync -av /home/user user@hostname:/home/user/backup


0

By chance, when creating the authorized_keys file, have you misspelled your filename (since you have spelled it as authorzied_keys in the question (i and z exchanged), there is a possibility you have named the file the same way) In the ssh config file, the name of the file is specifically mentioned as AuthorizedKeysFile %h/.ssh/authorized_keys Hence, you ...



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