I found the solution just after posted this message. Anybody has this issue continue reading.
1- Push Win+R buttons and execute Run window
2- Copy/Paste this :
%windir%\system32\inetsrv\appcmd.exe set config -section:system.webServer/httpErrors -errorMode:Detailed
Push enter button and thats all.
Many thanks to anilr for his help. This solve is not belongs to me it s anilr's.
Problem was below:
System: IIS7 running on Windows Server 2008 OS
Hello,
I hava a big problem and cant solve anyway. I have searched for days and find some topics about it also in iis.net but any of them can be solved my problem. I cant understand what is wrong.
I am attaching screenshots, please help me. Many thanks for helpers
Server side explorer page:

Client side explorer page:

ASP Config:
