Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

Avatar for Username

Pomoc pśepytaś

Glědajśo se wobšudy pomocy. Njenapominajomy was nigda, telefonowy numer zawołaś, SMS pósłaś abo wósobinske informacije pśeraźiś. Pšosym dajśo suspektnu aktiwitu z pomocu nastajenja „Znjewužywanje k wěsći daś“ k wěsći.

Dalšne informacije

Toś ta nitka jo se archiwěrowała. Pšosym stajśo nowe pšašanje, joli trjebaśo pomoc.

Netflix gives this error message when trying to play back F7121-1331.

bobnewingham
bobnewingham
more options

Sometime last year netflix stopped playing on FF. I found an older version of FF and installed it on my desktop - Netflix worked fine. BUT I did not want to have to mess with downgrading FF on all of my computers and then having to deal with the 'you dont have the latest version of FF' messages so I migrated to Chrome. It is now at least 9 months later and I thought I would give FF another shot-same F7121-1331 error message from netflix. I am running windows 10 version 1803

Sometime last year netflix stopped playing on FF. I found an older version of FF and installed it on my desktop - Netflix worked fine. BUT I did not want to have to mess with downgrading FF on all of my computers and then having to deal with the 'you dont have the latest version of FF' messages so I migrated to Chrome. It is now at least 9 months later and I thought I would give FF another shot-same F7121-1331 error message from netflix. I am running windows 10 version 1803

Wubrane rozwězanje

I don't have Netflix, so I can't test it myself. Another Windows 10 user who had problems for seven months reported that Windows update 1809 resolved the issue. No idea whether that is something you would want to do: https://support.mozilla.org/questions/1248372

Toś to wótegrono w konteksće cytaś 👍 0

Wšykne wótegrona (1)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
more options

Wubrane rozwězanje

I don't have Netflix, so I can't test it myself. Another Windows 10 user who had problems for seven months reported that Windows update 1809 resolved the issue. No idea whether that is something you would want to do: https://support.mozilla.org/questions/1248372