But when this happens, it’s possible that a new MAC filter has set itself up that can interfere with the connection between your router and Android phone.įirst, check your phone’s MAC address by going to “Settings -> About phone,” then note your “Wi-Fi MAC address. Im on deployment, and the wifi where I live requires a captive portal login and MAC filtering, meaning my Chromecast wont work without some Press J to jump to the feed. Modern routers tend to auto-update themselves so that they’re protected against the latest threats and keep your PC secure. In most cases, fixing the error means going through a series of troubleshooting steps to refresh the connection.Īlso read: How to Fix Wi-Fi Authentication Error on Android Check your Router’s Security Settings ![]() Other times, it may be a new network that you can’t connect to. Sometimes it happens on a network you’ve connected to a thousand times when nothing’s changed at all. Start the TV to which your Chromecast is connected and make sure that Chromecast is powered on 2. The exact cause of why this happens varies greatly. Switch Chromecast to Another WiFi Network 1. ![]() When it can’t assign one, you get the obtaining IP address error on Android. The network’s router is in charge of assigning IP addresses. ![]() Without it, you’re not allowed to connect. To connect to a Wi-Fi network, your Android device has to be assigned an IP address.
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