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Old 05-12-2014, 03:49 AM   #1
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Invalid MIT-MAGIC-COOKIE-1 keyInvalid MIT-MAGIC-COOKIE-1 when trying x11 forwarding

Hi all,

I'm new to linux and am trying to work out a concept in my virtual machine. i'm unable to launch application in a remote server as a user using ssh x11 forwarding. With Root credentials i could.

Below is the message i get whn i try as a regular user.

[sean@localhost2 ~]$ ssh -Y root@server
root@server's password:
Warning: No xauth data; using fake authentication data for X11 forwarding.
Last login: Mon May 12 13:13:04 2014 from
[root@localhost ~]# firefox
Invalid MIT-MAGIC-COOKIE-1 keyInvalid MIT-MAGIC-COOKIE-1 keyError: cannot open display: localhost:0.0


When i try as root, I'm able to launch.

[root@localhost2 ~]# ssh -Y server
Last login: Mon May 12 14:16:52 2014 from
[root@localhost ~]# firefox
[root@localhost ~]#

Please advise guyz
Old 05-12-2014, 05:19 AM   #2
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Old 05-12-2014, 06:35 AM   #3
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Thank you for your reply EDDY1. My apologies as i totally forgot to mention in the thread that i referred this site ( before posting.

X11 forwarding option is enabled in /etc/ssh/ssh_config

[root@localhost2 ~]# yum list | grep vnc
This system is not registered with RHN.
RHN support will be disabled.
gtk-vnc.x86_64 0.3.10-3.el6 @abc
gtk-vnc-python.x86_64 0.3.10-3.el6 @abc
libvncserver.x86_64 0.9.7-4.el6 @abc
tigervnc.x86_64 1.0.90-0.10.20100115svn3945.el6 @abc
tigervnc-server.x86_64 1.0.90-0.10.20100115svn3945.el6 @abc
gtk-vnc.i686 0.3.10-3.el6 abc

It works with root user credential and not with regular user meaning there is some configuration i need to check in user level.


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