Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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.

Learn More

When I try to delete Firefox to solve my earlier problem, it says to close Firefox before it can be deleted (but it's not open). Can it be running in the background?

  • 1 wótegrono
  • 1 ma toś ten problem
  • 2 naglěda
  • Slědne wótegrono wót the-edmeister

more options

Cannot open, cannot delete Firefox as I am trying to download and run a newer version.

Cannot open, cannot delete Firefox as I am trying to download and run a newer version.

Wšykne wótegrona (1)

more options

Yes it can be running in the background. Open the Windows Task Manager > Process tab and look for firefox.exe and use End Process on it. Or reboot Windows, that should kill a "hung" process.