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?
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.
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.