If facing the issue  "Failed to establish connection with server" while logging in SBO then you have to check whether software administrator is stopped or not by going to following path :

Windows/All Programs/SchneiderElectricStruxureWare/BuildingOperation/SoftwareAdministartion

Click on the start button. It will start the server and you will be able to login.

Julkaistu: Schneider Electric Suomi