Okay well eveyrthing on my local machine was running fine, IE, LiveCycle, Admin UI and etc.. all other programs. But Workbench was running realy slow at the end of the troubleshooting my network port was only supplying 10Mbps therefore Workbench was running in slow motion and lossing connect to server, but after changing the port to 100Mbps or 1Gbs Workbench runs perfectly fine.