Netflix Error F7121-3078

If you experience the error code F7121-3078 on your computer, often accompanied by one of the following messages:

Please Update Your Browser
Browser Not Supported

it means that the version of Mozilla Firefox currently installed on your computer is no longer supported. Follow the troubleshooting steps below to resolve the issue.

Steps for Mac
Steps for Windows

Update Firefox

Firefox can only be updated to a supported version if your computer is on Mac OSX 10.10 (Yosemite) or higher.

  1. Select the Apple icon in the upper left corner of the screen.

  2. Select About this Mac to view your version.

    • If the version is 10.10 (Yosemite) or higher, you will need to update Firefox to the latest available version to continue watching Netflix. For more information on updating Firefox, visit Mozilla's support site.

    • If the version is 10.9 (Mavericks) or lower, continue troubleshooting below.

Use Safari

Since your computer is on Mac OSX 10.9 (Mavericks) or earlier, your browser cannot be updated to a supported version. You will need to open Safari to continue watching Netflix.

Windows 10

Update Firefox

You will need to update Firefox to the latest available version to continue watching Netflix. For more information on updating Firefox, visit Mozilla's support site.

Windows 8

Update Firefox

You will need to update Firefox to the latest available version to continue watching Netflix. For more information on updating Firefox, visit Mozilla's support site.

Windows 7

Update Firefox

You will need to update Firefox to the latest available version to continue watching Netflix. For more information on updating Firefox, visit Mozilla's support site.

Windows Vista

Use Internet Explorer

Since your computer is on an older version of Windows, your browser cannot be updated to a supported version. You will need to open Internet Explorer to continue watching Netflix.

Windows XP

Use Internet Explorer

Since your computer is on an older version of Windows, your browser cannot be updated to a supported version. You will need to open Internet Explorer to continue watching Netflix.