You’ve got Chromecast and there’s an error when linking your device which is stopping you from being able to stream your movies and shows from your mobile or tablet.

Are you wondering if this error is because your Wifi connectivity is faulty, or is it your Chromecast dongle that is the problem?

Fixing the Chromecast error when linking a device may involve changing router channels or a quick reset. If this is the current issue you are facing, and you are not quite sure how to go about resolving this problem, we have created this easy-to-follow guide for you that will take you through these possible solutions, and give you all the necessary information required to help you understand this issue.

How do you set up Chromecast

Inserting Dongle at back of TV

Chromecast error when linking device

Setting up your Chromecast properly is important to make sure the dongle connects correctly to your device so you do not have any issues when trying to use it for the first time.

First, make sure you have all the necessary tools required to enable your Chromecast;

  • HDMI port in your TV
  • A Google account
  • Stable Wifi network
  • Google Home App downloaded to your device (mobile or tablet)

Setting up your Chromecast is simple to follow;

  • When you purchased your Chromecast, a USB power cable should have been included. Plug this into your Chromecast.
  • Insert your Chromecast dongle into an HDMI port at the back of your TV
  • Now put the power cable into a plug point

Your TV should now show ‘Welcome’ from Chromecast.

Note, If your TV does not automatically show this, you will need to select ‘Input’ or ‘Source’ on your TV remote to find the correct channel for Chromecast.

You should have the Google Home App already downloaded and a Google account activated;

  • Go into the Home App 
  • Choose your Google account
  • Select ‘Home’ or make a new home

At this stage, please make sure your Bluetooth connection is turned on. It should now start looking for a device.

Your TV screen will have a number showing on it, once this comes up on your device, select it and confirm.

You will now be required to connect your Chromecast to your Wifi network. If you are one that has two different Wifi networks, make sure you connect it to the same one your device is connected to.

If your Chromecast is connected to a different Wifi Network, this can interfere with the linking of device successfully

You have successfully set up your Chromecast.

Friendly Reminder, you cannot complete this set up on your computer, only mobile or tablet.

Why is my phone not finding my Chromecast

Mobile and Chromecast Dongle

Why is my phone not finding my Chromecast

No cast devices  found can be caused by a few reasons, and can be related to your Google Home app,  or the Chromecast dongle itself;

There is a problem with your internet connection

  • Your network provider for your Wifi may be experiencing issues, if your network is down, you won’t be able to connect
  • Your Wifi router may be too far from your Chromecast, try to make sure it is close as possible to the dongle
  • Reset your router by turning it off, waiting a minute or two, and turning it back on
  • Ensure your Device and Dongle are only 4 – 6 meters apart

The device you are using does not support 2.4 Ghz Wifi

  • Chromecast does work on 5 Ghz, so if  2.4 Ghz is not available, this will stop your Chromecast from connecting
  • If you need assistance on how to change this, click here

Settings have been inputted incorrectly

  • If you have chosen the wrong options when setting up your Chromecast, you will have to reset your Chromecast to the correct settings.
  • You may be using the incorrect HDMI channel on your TV to the one you have connected your Chromecast

Related Posts:

Your Chromecast and Google Home App are connected to different Wifi networks

  • Chromecast will not work if it is connected to a different Wifi network than the one your device is connected to
  • If you have changed your Wifi password, you may need to update it on either Chromecast or your mobile

You haven’t updated the firmware on your router

  • If the firmware on your router is outdated, this may interfere with Chromecast being able to link successfully.
  • If you need to know how to update the firmware, use this link

How to relink my Chromecast

Lady watching TV

How to relink my Chromecast

Relinking your Chromecast can be completed in a few easy steps. You would first need to reset your Chromecast;

Reset Chromecast Device

Step 1. Keep Chromecast plugged into the HDMI port

Step 2. Hold down the button on the dongle for around 25 seconds. It will first flash red and and then flash white

Step 3. Once your TV screen goes black, you can let go of the button, the dongle will now be reset

Reset Google Home App

Step 1. In your app, click on the device in question

Step 2. Select ‘Settings’

Step 3. Click on ‘More’ (dot icons in the top right corner)

Step 4. Select ‘Factory Reset’

Step 5. Confirm by clicking on this again

You can now set up your Chromecast to your TV as you would for the first time.

Remember to have the Bluetooth on your phone switched on.


Having the Chromecast error when linking device is an issue you want to be able to resolve as quickly as possible.

Chromecast has a good customer support page that you can make use of which covers Chromecast, Chromecast Audio and Built-In, as well as Google Home.

We hope this guide has given you all the information you were looking for to get your Chromecast back to being linked to your device, so you can get back to streaming all your favorite TV shows and movies from your phone.