HI ,
I use putty to login SLES server. I did “enable X11 forwarding” on putty and in “/etc/ssh/sshd_config”, X11Forwarding yes . When I run ./installgui in putty with my account, GUI of application is opened. However, my application requires root privilege to run. So, I use command sudo ./installgui. And i got error like this: “PuTTY X11 proxy: wrong authentication protocol attempted08:05:14 PM: Error: Unable to initialize GTK+, is DISPLAY set properly?”
Can somebody help me solve this issue. I need to run app via sudo comand .
Thanks
Run it with gnomesu, for example; gnomesu awesomeapp
Great. Thanks so much Miuku. I searched many ways on google. But just only you can provide me the best solution. Thanks so much. Thanks SUSE forum 
The more because this is NOT the SUSE forum, but the openSUSE forum.
The SLES/SLED forum is here: Rancher Labs
Nevertheless, the followining information is rather distro independant: SDB:Login as root - openSUSE Wiki
Noted. Thanks mod