Unable to open display ":0.0"

Unable to open display ":0.0" after issuing xhost +

1. Ensure you have following rpm installed

• [root@corelogic-srv4 ~]# rpm -qa | grep xorg
• xorg-x11-apps-7.1-4.0.1.el5
• xorg-x11-server-utils-7.1-5.el5_6.2
• xorg-x11-xauth-1.0.1-2.1
• xorg-x11-font-utils-7.1-3
• xorg-x11-fonts-base-7.1-2.1.el5
• xorg-x11-filesystem-7.1-2.fc6
• xorg-x11-utils-7.1-2.fc6
• xorg-x11-xinit-1.0.2-15.el5
• xorg-x11-xfs-1.0.2-5.el5_6.1

   2. Ensure your xclock is running

   3. If  .Xauthority is already created on your root home. Rename it for .Xauthority_old.

   4. Install  Xming on your client machine.

   5. Configure putty session with X11 (see below image)

   

    6. Start Xming your client machine

    7. Logged in root or other user in Putty ( if some reason other user has issue with    display , run  ---- xhost +    as root user and then try.

    8. Issue Xclcok ( you could see the window )

   

Cheers!