Google Chromecast is a unique streaming device that easily plus into any TV or monitor with an HDMI port and stream content from your mobile to the TV or computer. That means you don’t need to pay for any subscription fees for Chromecast except for streaming services. There are a couple of Chromecast versions available and if you’re using it for a while, you may receive an error that says Chromecast Source Not Supported Error.

If you’re also one of the victims and encountering the same error message every time you want to cast the screen from your mobile device to the TV or even via using the Google Chrome browser, make sure to follow this troubleshooting guide to fix it out. Well, that actually happens if the Chromecast is unable to detect the source that you’re trying to use.

Fix: Chromecast Source Not Supported Error

Although there is no specific reason that can be found behind such an error, there can be a couple of possible reasons that may trigger it. So, without wasting any more time, let’s jump into it.

1. Restart both the Chromecast and TV

While dealing with smart devices and especially streaming devices, we always recommend performing a simple restart of your device. It should help you to resolve multiple issues or glitches whatsoever. So, make sure to turn off both the Chromecast and the screencasting device like TV or computer. Wait for a while and turn them on again to check for the issue.

If this method doesn’t help you out, try following another one.

2. Check Your Network

Mostly the internet connection plays a major role during screencasting and online streaming. Make sure that your internet connection is stable and fast enough to keep things properly. If you’re not getting the faster speed or stable connectivity, try browsing something else and check for the issue.

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Meanwhile, you should also perform a factory reset of your Wi-Fi router to clear out the cache and networking glitch (if any). To do so: Just turn off the router > Unplug the power cable from the router > Wait for around a couple of seconds and connect the power cable again > Turn on the router and check the connectivity.

3. Connect Chromecast and Casting Device to the same Wi-Fi

Make sure to check whether your casting device and the streaming device are connected to the same Wi-Fi network or not. If in case, any of the devices are connected to a different Wi-Fi network or even a different SSID then try to connect both to the same Wi-Fi or SSID network. This is one of the important methods to fix the Chromecast Source Not Supported error.

4. Clear Cache and Data of the Streaming App

Mostly the app data storage or cache regarding issues may appear on Android devices whatsoever. In that scenario, you’ll need to clear the app cache and data of the particular application on your mobile from which you want to stream the content on your computer or TV using Chromecast. To do this:

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  • Go to the Settings menu on your Android device.

  • Tap on Applications > Tap on Manage Apps.

  • Scroll down the list of installed applications and tap on the particular app. [For example: If you’re trying to stream Netflix content, tap on Netflix]

  • From the App Info page, tap on Storage > Select Clear Data to remove the app cache and storage quickly.

Please Note: The actual steps may vary depending on the mobile brand and model number. But the steps should be the same and you may have to individually Clear cache and Clear data most probably.

  • You’re done. This process will completely delete the app cache data and storage data to refresh everything.
  • Finally, open the Netflix app again > Sign in to your existing account and try streaming or casting the content accordingly.

5. Turn On Screen Casting on Chrome Browser

So, it’s needless to say that if you’re using the Chrome Browser on your PC to mirroring the content then make sure to enable the screencasting on the Chrome browser. To do so:

  • Open the Google Chrome browser on your PC.

  • Type chrome://flags in the address bar and hit Enter.

  • It’ll open up a list of available Chrome flags on the browser.

  • Now, you’ll need to search for Mirroring in the search bar by typing it.

  • You can see a flag called ‘Allow all sites to initiate mirroring’.

  • Click on the Default section and select Enabled from the drop-down menu.

  • Once selected, open a new tab, and try running the cast screen accordingly.

6. Disable Ad-Blocker and VPN

In order to stream any blocked content in your region, you may use a VPN service on your PC or mobile device. But that can also sometimes trigger several connectivity or streaming-related issues while using Chromecast. If you’re also facing the same problem, make sure to disable the ad-blocker and VPN service temporarily.

Whether you’re using a PC or mobile device, you can turn off the VPN or ad-blocker service easily. Once done, restart your computer or phone, and try checking the issue again. For PC, you can follow the steps below:

  • Open Google Chrome on your PC > Click on the three-dots icon from the top-right corner.

  • Go to More Tools > Click on Extensions.

  • Now, locate the Ad-Blocker extension or the VPN extension from the list.

  • Click on the toggle to turn it off individually. Additionally, you can click on Remove to uninstall from Chrome if not necessary for you anymore.

  • Finally, close the Chrome browser and reopen it to check the mirroring issue again.

7. Update Chrome Browser

If your Chrome browser hasn’t updated for a while, try updating it to the latest version. Although Chrome updates automatically in the background, sometimes it may unable to do so. In that case, you can always manually perform updating it by following the steps below:

  • Launch the Google Chrome > Click on the Menu (three vertical dots icon) from the top-right corner.

  • Click on Settings > Go to About Chrome from the left pane.

  • It’ll automatically check for available updates. If yes, it’ll automatically download and install the update.

  • Finally, close and restart your Chrome browser to apply changes.

This method should help you to fix the Chromecast Source Not Supported error completely.

8. Factory Reset Chromecast

If none of the methods worked for you, try performing a factory reset your Chromecast by following the steps below:

  • Make sure that the Chromecast is connected to your TV.
  • Now, press and hold the Reset button for around 25 seconds.
  • The LED indicator will start blinking and the TV screen will go blank.
  • Next, follow the on-screen instructions to reset the Chromecast device properly.
  • Once done, make sure to reconnect the Chromecast device again and restart your TV to refresh the connectivity.
  • Connect to the same Wi-Fi network again > Sign in to the specific account (if required) and start casting the screen.
  • Enjoy!

That’s it, guys. We assume this guide was useful to you. Feel free to ask in the comment below for additional queries.