That will happen when you change your router. If the Wi-Fi network to which you connected your Chromecast is not active anymore, things will get a bit tricky. The steps are a piece of cake, and all you need to do is ensure that your mobile device is close to the streaming one. Usually, the reason to change Chromecast to a new Wi-Fi connection is a simple switch between networks, such as going from broadband to mobile hotspot or when traveling. If you’re unsure about whether you should go through the hassle of changing your Wi-Fi network on your Chromecast device, there are some common reason why this is necessary. Two Primary Reasons to Change Wi-Fi Networks Depending on the reason for the change, the process can be straightforward or a bit tricky. If you take your Chromecast with you or you have more than one Wi-Fi source inside the home, you’ll need to change its Wi-Fi regularly.
