Ubuntu :: Authentication Failed In Software Center?

Jun 10, 2010

I apologize first because I do not know if this is the right section for my problem, but I could not find anything more suitable. I have an Asus 900 with Ubuntu Netbook Remix 10:04 In a nutshell: I realized today, trying to install a new program with Ubuntu Software Center, that I can not anymore authenticate myself as root. Of course I have not changed the password, but the old one is not anymore accepted ("Authentication failed").

The interesting thing is that I can install programs without problems (using the same old password) with the package manager in Administrative Tools (synaptic). Here, the authentication works well. Opening a terminal, I can use sudo to run any command by providing my password, with no problem at all. Following some guides found on the web, I reset the root password (supplying the same one as before) and everything went well. Only .... nothing has changed! Ubuntu center software authentication always fails.

What could have happened? Maybe I did some mistake by editing /etc/sudoers to solve another problem some days ago. Ubuntu told me that my username was not in the sudoers file, so I resolved it by adding to /etc/sudoers the line myusername ALL = (ALL) ALL

I checked the contents of the file and, apart from this line added, it is as it was before (I compared with that on another PC with Ubuntu). Can anyone make some sense out of it? Starting from the fact that the package manager does function ... but software center does not.

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Ubuntu :: Software Center Authentication Lock?

Jan 15, 2011

I have a problem with the ubuntu software center. I can't get authentication to work to install anything. The error I get is:Previous Installation hasn't been completedThe installation could have failed because of an error in the corresponding software package or it was cancelled in an unfriendly way. You have to repair this before you can install or remove any further software.I have no idea how to "repair this". I was trying to install XML copy editor and something happened during installation. Since then I rebooted but nothing seems to fix the error. I looked through the installed software and couldn't find program.I looked for some script solutions but they were for specific programs, not for the software center itself

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Ubuntu Installation :: Log On Failed After Upgrade/install "authentication Failed"

May 20, 2010

I've been using Ubuntu since 6.04, not a linux guru by any means but can usually get myself out of trouble.

So, the issue... I installed 8.04 on my mother's laptop some time back as she was having trouble keeping Win 2000 running (she has a low spec no-name generic laptop btw). I live in Autsralia and she in England, i thought i could better support her if she was running Ubuntu... All has been well with 8.04 but with the new LTS release (10.04) i thought i'd talk her through the upgrade... Did the online upgrade via Update Manager, all seemed to go OK but when she went to log on after restart she got an error saying 'authentication failed' even though we are 100% sure we have the user name and password correct... Tried to do a ctrl+alt+F1 to by pass the GUI log on but couldn't get the terminal session to open up, just got a black screen - no command prompt.

So... thought OK re-install... downloaded the ISO, burned and sent her a CD in the post... talked her through the re-install, all seemed to go well (again) - BUT, after restart, couldn't log in "authentication failed" again...

So, remember i'm trying to talk a novice through all this... any thoughts!?!

If i can get her to log in i can then support her via some kind of remote sesion or other screen share... and it wont cost me a small fortune in international calls!!! But if i can't get a log in, i'm dead in the water!?

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Aug 15, 2010

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[Code]...

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Aug 18, 2011

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Sep 24, 2010

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Apr 10, 2010

After 72 hours googling for this I found nothing. I have problem with pppoe on ubuntu 9.10.

On fresh installed ubuntu i tried to establish pppoe connection with this command:

Code:

This (pppoe) doesn't work from the live cd

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May 21, 2010

I have been used NX client on windows 7 connected to ubuntu with NX client/node/server with no issues. The matter started when I have formatted Ubuntu and reinstalled NX, from that NX connects but shows a key error as follows:

NX> 203 NXSSH running with pid: 4328
NX> 285 Enabling check on switch command
NX> 285 Enabling skip of SSH config files

[code]....

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Dec 20, 2010

I'm trying to restrict command line ssh and yet keep NoMachine working, so I followed this post [URL]... and tried adding this to /etc/ssh/sshd_config:

AllowUsers nx@*.*.*.* paul@*.*.*.* *@::ffff:127.0.0.1 *@127.0.0.1

On restarting the ssh daemon other users can't login by the terminal, but I can. However, NoMachine won't log me in. I get: NX> 502 ERROR: Public key authentication failed. As a server side check:

[code]...

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Ubuntu :: Authentication Failed Message At Login Page

Mar 20, 2010

the laptop of my friend runs ubuntu through wubi. The system suddenly freezed and she restarted it manually. After doing a check disk and automatically repaired some packages(unfortunately she doesn't remember what exactly, only just inode information appeared), she can't log in as when she types her username and password the answer is authentication failed. We tried to change the password through recovery mode but nothing happened.

1. Do you have something to propose to solve the login problem?
2. If not how can i access and back up her ubuntu documents through windows?

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Jul 12, 2011

I want to use nomachine, instead of freenx, and well it isn't working. SSH server works and all, because freenx works., same for neatx. But I hear with nomachine you can see the main display of the computer? Is this true? Well one way to find out, but whenever I try to login I get: Authentication failed for user x. I don't know why, neatx and freenx worked, even x2go, but not this.

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Jul 17, 2011

I have just installed Fedora 15 on my laptop, Now i am trying to install some programs like .... skype, drivers to my printer etc but i get this message: Failed to obtain authentication.... when the installer is trying to solve dependensies...

I have tried to log in as su but i cant that ether due to fail password or username... that is the message i get at the log inn screen.

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Feb 2, 2011

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This is what I did: yum install vnc-server

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Feb 25, 2011

how do i stop autoboot of ubuntu? and when i try do " su " in the terminal and i enter my password it says failed authentication

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Aug 31, 2010

Earlier today I was setting up ssh on a new computer. I modified permissions on the Passwd folder to complete the setup. I few hours later when I went to sudo something in the terminal I received the notice of an incorrect password (after using sudo prior to this), even though it was typed correctly.

I tried to restart the computer to solve the issue, but was met with an Authentication Failed message, regardless of the user I tried to log in with. I was hoping I could log in with recovery mode but was unable to do that as well. I have searched a substantial amount and have not found a solution. Could this be an issue with permissions on either the Passwd or Shadow folder? If so, could these be changed if I ran a Live CD?

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Nov 11, 2010

I have a problem updating packages when using the kpackagekit systray notifier, it fails with the error "failed to obtain authentication".I've looked around and can't find any log output of this.If i start kpackagekit from the menu it all works fine, but not this way.This is with kubuntu 10.10, upgraded from 10.04, it did actually work before.

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Mar 22, 2010

I have ubuntu9.10 installed inside windows Thunderbird works ok in windows. When i try to get my email in ubuntu9.10 i get this message. server responded authentication failed.

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Jun 23, 2010

Im using CenOs 5 and have install a mail system(postfix+dovecot),when I trying to enable selinux for enforcing mode and i'm have some issue, the user authentication failed. How can i to fix this problem?

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Server :: Can't Connect To Nxserver - Authentication Failed

Jul 21, 2010

If your machine is connected to the Internet, you'll probably want to disallow ssh password authentication (which is advised but not mandatory). Edit the /etc/ssh/sshd_config file and change/add the following lines:

PasswordAuthentication no
AllowUsers nx

Don't forget to restart the sshd daemon after making that change: service sshd restart I already have PasswordAuthentication yes in my file as I need it to login to the server through ssh. Do I just skip that line and only add AllowUsers nx mynxuser at the end? Also, I followed the rest of the manual and when I tried the client on Windows it failed: I put in a user and password to login but shouldn't it be using the key instead? I think the problem is related to the above due to:

Quote:

NX> 203 NXSSH running with pid: 1428
NX> 285 Enabling check on switch command
NX> 285 Enabling skip of SSH config files

[code]...

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Aug 22, 2010

I am trying to setup Postfix along with dovecot on RHEL4. I have done the necessary settings in dovecot.conf, yet I am not able to log into the POP3 server. The error I can see through WireShark/Ethereal is "Err- Authentication failed" Some of the important settings in /etc/dovecot.conf are

disable_plaintext_auth = no
auth_mechanisms = plain
auth_userdb = passwd
auth_passdb = pam
auth_user = root

The users/passwords are setup on Linux file system without MQSql or any other database. SASL etc is not configured at all.

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Sep 8, 2010

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Oct 15, 2010

I'm trying to set up mutt for my hushmail account. I've compiled my own mutt package:

Code:
System: Linux 2.6.35.7 (x86_64)
ncurses: ncurses 5.7.20081102 (compiled with 5.7)

[code]....

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Aug 3, 2009

I spend all day, trying to make bluetooth working with my phone Nokia 2600. First, i try'it with bluez-utils 3.7, and later with 3.9, but i no luck. So, what i have. I use hcitool to scan for my device, and find'it. Next, i connect to my phone with success. Then i try pairing with my phone, using "auth", but here i got error: HCI authentication request failed: Input/output error

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OpenSUSE Install :: Authentication Failed - During The OS Installation

Jun 3, 2010

I wanted to install it on a secondary computer in my house for web browsing and little-to-nothing more.

How can I fix or get around the error 'Authentication failed' when attempting to login?

I just installed openSUSE. The installation seemed to go well. After installation, everything loaded up and I was using the OS with no problems.

I restarted the computer to change my boot sequence in the BIOS. Then I got to the openSUSE login screen. I was presented with three options:

1. my username - When I enter in the password I specified during the OS installation it says "Authentication failure"

2. Automatic Login - just says "Permission denied"

3. Other... - Nothing seems to work here

How can I login?

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Jan 26, 2011

I have intalled RADIUS server on one machine which has fedora 10. I have installed freeradius-server-2.1.10 on it(server machine IP 10.150.110.42).

I have one more machine with redhat linux on which i have installed pam_radius-1.3.17(client machine IP 10.150.113.4).

I have done the follwoing configuration at both sides

SERVER SIDE.

users file
"vijay" Auth-Type := Local, Cleartext-Password == "123qwe", NAS-IP-Address == "10.150.113.4"
Reply-Message = "Hello, %u"

[Code]....

Above mentioned is my configuration. when i try to connect client with SSH it is not sending a request for authenticating user to RADIUS server. what else configuration i have to do, or if there are any mistakes in my configuration

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May 19, 2010

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Code:
May 19 22:55:04 <hostname> nullmailer[12435]: Rescanning queue.
May 19 22:55:04 <hostname> nullmailer[12435]: Starting delivery: protocol: smtp host:

[code]....

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Security :: SuSe Authentication Failed After Installation Of Kerberos

Jun 3, 2010

I have installed keberos on my suse machine, but after installation now I am not able to login in it even with the root password. I search over the internet but could not find the solution. What to do now and how to configure Kerberos on a local machine with only local users authentication. I mean client and server both are on the same machine.

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Dec 31, 2010

Using nomachine trying to setup an nxserver. Installed nx per these instructions. Checking the status looks like this.

Quote:

cynthia@cynthia:~$ sudo /usr/NX/bin/nxserver --status
NX> 900 Connecting to server ...
NX> 204 Authentication to NX server failed.
NX> 110 NX Server is stopped.
NX> 999 Bye.

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Jan 17, 2010

My Redhat 5.3 desktop running on an AMD 64 system was not receiving the updates from rhn until a few days ago when it started checking in and downloading updates. The updates crashed generating bug reports. I tried running yum-complete-transaction command, it aborted also. I found a knowledge base article with instructions on how to rebuild the rpm database which I followed. After completing the procedure I tried to reboot. The system gets to the logon screen and then I get the message Authentication Failed and the system locks up. The commands I ran are:

rm /var/lib/rpm/__db*
rpm -rebuilddb
yum clean all

I am also seeing a message during boot up that the module libxml2 is missing and when I try to download the package from rhn yum cannot find the server.

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Nov 14, 2009

I'm extremely new to SuSE Linux. I wanted to move away from Windows and so I decided to reload my Desktop with SuSE linux.I have had no trouble until now. I'm trying to connect to my work VPN connection. From my laptop (which unfortunately is Vista) I'm able to connect without any issues. However, when I tried out the KVPN application on my SuSE linux, it just doesn't work. I get the error:
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As a side note, when I type ping google, the packets are received 100% but when I ping my company address, no packets are received. Hope this info is useful.

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Feb 19, 2011

i seem to encounter lots of little troubles here and there... just need to get used to it.

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Nov 12, 2010

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Jun 30, 2011

When I try and access redmine from the webbrowser i get an error:

Code:
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[code]....

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Jun 24, 2010

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Feb 22, 2011

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I am greeted by this error upon booting:
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