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How to check the common network issues which make the cast failed? If you are using VPN, the device also could not be detected, please turn off VPN. Most home networks don’t need any special configuration, but sometimes you may need to change a setting or two on your router to allow media streaming on your network.Ĩ. The firewall on your router may prevent communication.Check out that your router is configured properly. It’s easier to fully disable these apps while testing for connection, then re-enable and make adjustments later.ħ. It’s essential as antivirus apps often have their own firewalls and network traffic blockers. With antivirus products, such as Norton, you may have to follow a similar process. Apple has provided instructions for allowing applications through the firewall. In many cases the firewall on your computer may prevent the devices from communicating. Wi-Fi B & G are not really up to modern networking tasks, so please use an AC or N router.ĥ. Use an AC or N router.New routers support Wi-Fi AC&N,where as old ones might only support Wi-Fi B and/or G.

So it’s important not to have your Mac on 5Ghz and the receiving device on 2.4Ghz or the other way around.Ĥ. Some routers (dual band) have both a 2.4Ghz and a 5Ghz wireless network. Make sure that your Mac and the receiving device are connected to the same Wi-Fi network, same router, and the same router channel. Powering off your TV is NOT ENOUGH to do a full reboot.ģ. Please disconnect it from its power supply for at least 1 minute, then put it back in. Unplug it from the power supply for a full reboot.

Just unplug it from the power supply, wait 30 seconds, then plug it back in.Ģ. Please relaunch app after you finish all the steps below.ġ. If you have problems discovering your device, here are some troubleshooting tips that can help: Please make sure that your Roku device and Mac are connected to the same Wi-Fi and under same sub network. Why the app doesn’t find my device that I want to stream to?