RWC2/Windows cannot find local server

Hello,

I'm having trouble using RWC2, it cannot find standalone local server.

I've tried RWC2 on:

Windows 2008 R2/SP1 with ESRT2 raid1 or MatrixRAID1

Windows 2012 R2 with ESRT2 raid1 or MatrixRAID1

* using S3420GP

* Installed "complete" package without any install error.

* tried to search server itself by its assigned IP address and 127.0.0.1

* All of Windows firewall disabled.

Since this software does not have much configuration of kind,

I wonder where to look at.

any help would be appreciated !