Firefox desktop · Research guidance. Instructions are based on publisher guidance; a UK IPTV account was not tested on this platform.
Identify the credential being protected
Firefox’s Primary Password protects locally stored logins. It is separate from a streaming website password and from a Mozilla account. A prompt for this local protection should not be answered by changing the service password at random. Read the prompt and identify which system is asking before taking action.
Open Firefox’s password settings
Mozilla documents the Passwords area, its menu and settings route to the Primary Password control. Current and older releases can label this as Set primary password under Additional protections or Use a Primary Password. Follow the current Firefox labels and keep the settings page private because it concerns saved credentials.
Set a recoverable personal secret
Choose a unique Primary Password you can retain securely, confirm it as requested and finish the documented dialogue. Do not send it to a website or include it in a support screenshot. Mozilla says the feature is local to each profile or device rather than synchronised between them, so another computer can have a different state.
Understand session behaviour
Mozilla describes a prompt when Firefox needs access to stored passwords in a session, including when adding, removing or showing a saved password. This is expected local behaviour rather than evidence that every website requires another payment or account. It does not necessarily sign out a site that already has an active session.
Avoid an uninformed reset
If the Primary Password is forgotten, read Mozilla’s separate reset guidance first: resetting removes saved usernames and passwords. That consequence is different from changing a known Primary Password using its settings. Keep legitimate account-recovery routes available and never treat a destructive local reset as a routine playback troubleshooting step.
Questions, answered
Is it the streaming service password?
No. It protects Firefox’s locally stored logins.
Does the same Primary Password automatically sync everywhere?
Mozilla says it is set locally for each profile or device.