In some cases (mine), Windows creates a "Compatibility Files" Folder.
When you open Windows Explorer and go to the folder C:\ProgramData\CoDeSysOPC\, you can see in the toolbar of Explorer "Compatibility files" (in Dutch it is called Compatibiliteitsbestanden).
This will take you to C:\Users\<your user name>\AppData\Local\VirtualStore\ProgramData\CoDeSysOPC\
In my case somehow Windows likes to put the configuration files in there, instead of the C:\ProgramData\... folder.
Open the "OPCserver.ini" to see the details of your configuration.
yes, I notice the file of "OPCServer.ini",but this file is created by CoDeSysOPC.exe,not by OPCConfig.exe. And even you delete this file,it will be automaticly created the next time when the CoDeSysOPC.exe starts again.