Hello, i'd like to capture the content of an ext:panel or a screenshot of the whole browser from a client, but i'm having troubles. In localhost, i can do it with CopyfromScreen method, but since the system is in a server and the user acessing it via web, it gives me an error. Does anyone know how I can get through this?

Let's see code and that error message in its entirety. Be aware that you have a lot of steps to get this to work from screen shot to the upload to some place. As to "it" being a server you also have to reveal detail here. Example: You are serving up content via IIS (or what?) and this screen does not exist on the server.