Netflix Error F7399-1260
If you experience the error code F7399-1260 on your computer, it typically points to a browser extension that is preventing Netflix from working properly. Follow the troubleshooting steps below to resolve the issue.
Disable Extensions in Firefox
In the upper right corner of the browser, click Menu.
Click Add-ons and themes, then click Extensions.
Under Enabled, click the button next to each extension to disable it.
Quit and reopen Firefox, then try Netflix again.