Hi, I've been working with RSLogix 500, today i found that i was unable to connect to Micrologix PLC because in the RSLinx the Driver Ethernet IP that was configured to communicate whit PLC appears with a Red Cross. Yesterday everything was working. I've installed an antivirus software, i supposed the reason was the antivirus, but i've tried on configs and even uninstalling it, and RSLinx seems that can't reconigze the ethernet adapter (guess that means red cross) RSLinx 3.51 CPR 9 SR 5.1 RSLogix 500 Pro 9.0 Windows 7 Ultimate 32 bits Could you, provide to me some guidelines to solve this, or if somebody has had this problem, could share the solution? thanks in advance