Whenever you stuck somewhere like while using the internet then what first you check? I think the answer is your router device, You can check it the wired is properly connected or not but when you got to know all is perfect then you are started panic why this happen what reason? So first this is all because of Roku error code 003. Here are some steps to know how to fix Roku error code 003? First, check the status of the Roku servers, maybe the server going under maintenance. Due to which server down. If this is not the problem then. You have to change the type of security protocol of the network, So You need to login to your router settings. Also, you can try to connect your Roku device with the Ethernet cable instead of the WIFI or wireless connection. So if the problem is within your internet-connected can be identified and then fixed. This is the step to resolve Roku error 003, if you want more information then you are free to call our technicians dial +1 805 209 2307 and you will get the solutions.