layout error while connecting with VPN

Hello All, I'm a junior developer and I´m having a trouble with WDA layout, It's says the page cannot be displayed or Script error view_designer is not available. When I connect from my office I can see the layout, the problem ocurrs when I connect from my house trhough VPN. I've tried to change my host file but nothing happens. I'm not using proxy connections. Can anyone help me please?. Thanks.