Not able to set up a PCo Dataserver in MII 15.1

I am trying to set up a PCo Dataserver in an 15.1 MII server. I'm using a PCO Connector as the connector type, and the URL option to provide the conection information for the Plant Conectivity instance. After providing the correct URL I obtain the window asking for the Windows user and password of the PCo Server.

Problem comes after I provide the correct credentials . I do not obtain any result. Only an empty screen with no PCo Agent in the list. No error message.

I have tried changing the server address, fully qualified server address, and IP address, all with the correct port, and correct credentials of the server but the result is the same .

I have installed and started the PCo 15.1 and even set up the conection to the same MII instance correctly.

Any help would be appreciated.

Guillermo