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 sign in to my Yahoo account, it says username or password is invalid. It is the right one and I can sign in on other browsers. What's up?

  • 1 wótegrono
  • 4 maju toś ten problem
  • 9 naglědow
  • Slědne wótegrono wót cor-el

more options

For the past 4 days, every time I try to sign into my yahoo mail on firefox, it says my password or username are invalid. I can sign in with no problems on other browsers such as IE or Chrome. I even went so far as to have my password reset and it still doesn't work.

For the past 4 days, every time I try to sign into my yahoo mail on firefox, it says my password or username are invalid. I can sign in with no problems on other browsers such as IE or Chrome. I even went so far as to have my password reset and it still doesn't work.

Wšykne wótegrona (1)

more options

That issue can be caused by corrupted cookies.

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Firefox > Preferences > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove Cookies" from sites causing problems:

  • Firefox > Preferences > Privacy > Cookies: "Show Cookies"

If clearing the cookies doesn't help then it is possible that the file cookies.sqlite that stores the cookies is corrupted.

Rename (or delete) cookies.sqlite (cookies.sqlite.old) and delete cookies.sqlite-journal and cookies.txt, if they exist, in the Firefox Profile Folder in case the file cookies.sqlite got corrupted.