I can't access part of the Yahoo! Finance site, or I'm having issues logging in while using Firefox
This article provides troubleshooting assistance for users whose Yahoo! Finance pages don't load properly or at all, or who are unable to log in.
The Firefox browser needs to be upgraded.
Sometimes the issue you are experiencing can be attributed to use of an older version of Firefox. Older versions handle Java inefficiently, which may be the cause of your issue. The latest version of Firefox has many updates, making it faster and more reliable, including much-needed improvements in how it handles Java.
We recommend that you update your Firefox browser in order to take advantage of these improvements.
After you have installed this new version of Firefox, please ensure that you have the most recent version of Java. If Java is not up to date, it can negatively impact how a webpage is displayed.