As it turns out, the root cause of the issue here is the network connection that you are using to establish a connection between the Chromecast device and the device you are casting from. Usually, this can be restricted to AP isolation; however, that may not always be the case. To understand this further, let us have a quick look at the potential causes of the error message. Now that we have gone through the potential causes of the issue, let us get into the solutions that you can implement to get everything back up. So, without any further delay, let us jump right into it.
Disable AP Isolation
As we have mentioned earlier, AP isolation is a feature that comes with wireless routers for security purposes. This is because it essentially hides the other devices that are connected to the same network from each other. This, as a result, prevents them from communicating with each other over the same network and therefore, enforces security over the network. However, this may be a disadvantage for your local network where all the devices connected to the network are known to you. Chromecast connects to other devices over the network and therefore, for it to work properly, it will need to be able to communicate with the other devices on the network. Access Point isolation can be disabled from your router’s wireless settings. For this, you will need your default gateway and the admin credentials that are usually located behind or under the router or are provided to you by the ISP. Follow the instructions down below to do this:
Reset Network Settings on your Phone
If disabling AP isolation does not fix the issue for you, it is likely that the issue is being caused by your phone’s network settings. In such a case, what you will have to do is simply reset your WiFi settings. This will remove your network configuration from your phone and you will have to provide the password in order to connect again. Follow the below steps to reset network settings:
Android
iOS
Reset Chromecast
As it turns out, the issue can sometimes be caused by your Chromecast settings. In such a case, you will have to reset your Chromecast device so that it reverts back to the factory defaults. This will remove any settings stored on your device and as a result, help you get back on track. To reset your Chromecast device, first of all, make sure that it is plugged in. Then, hold the small button on the side of the device for about 20 to 25 seconds. You will see a message on the screen confirming that the device is reverting to factory settings. In addition to this, you can also reset it through the Google Home app. Follow the below instructions to do it via the Google Home app:
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