Fix: Cannot Enable Unknown Sources in Chromecast with Google TV

Chromecast with Google TV basically requires a TV with an HDMI port, a Wi-Fi network, a Google account, a power source, and a compatible mobile device to stream your favorite content seamlessly. Whereas previously it did require a streaming device individually that was a setback for the brand. But not anymore. Now, if you’re one of the users and cannot enable unknown sources in Chromecast with Google TV, you can follow this guide completely.

With the current generation of Chromecast with Google TV, you can simply start watching Netflix, YouTube, Hulu, Amazon Prime Video, etc right from your TV without any additional device. However, it seems that there are some apps still not available on the official Google Play Store app. In that scenario, you’ll have to sideload and install the required third-party app on the Chromecast with Google TV via an external site. So, enabling unknown sources is needed.

Fix: Cannot Enable Unknown Sources in Chromecast with Google TV

Fix: Cannot Enable Unknown Sources in Chromecast with Google TV

Just like the Android device, you’ll be able to install the third-party apps directly on your Chromecast with Google TV via a third-party website after enabling the unknown sources option whatsoever. You can go through this full article to easily turn it on via the Developer Options menu because it comes turned off and hidden out of the box. If in case, the Unknown Sources option is greyed out on your Google TV then don’t need to worry about it.

  • First of all, you’ll have to click on the Android TV OS Build Number around 7 times.
  • It’ll enable Developer Options > Install Developer Tools from the Tools category in Chromecast.
  • Once installed, open the app > Open the File Manager app and try to install an APK.
  • It’ll ask you for Allow Installation from Unknown Sources.
  • Next, you’ll be able to enable the Unknown Sources option finally.
  • You’re good to go.

That’s it, guys. We assume this guide was helpful to you. For additional queries, you can comment below.


  1. o with chrome Google tv 12


    1. go to system>about> click build os multiple time to enable the developer mode.

    2. Get file manager or any file manager you conftable to work with.

    3. Transfer the file you like to install to the device or install from the LAN.

    4. Go to the source file and Run the file.

    5. It will prompt you with message “for your security your tv currently isn’t allowing to install……”

    6. Click setting

    7. Allow the app you like to install from

    Then the app/file will start the install or go to the file again and rerun the installation.

    I hope its help

  2. It’s a great information. Everything is now working and I can install app’s from unknown sources, thanks

  3. Definitely worked thx so much for the help been trying to figure how to get movie box back on my Chromecast but did it thx to you. 💪🏼

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