On CNN.com i get this error when trying to view video or when clicking on one of their tabs:
400 Bad Request
Request Header Or Cookie Too Large
Go to Solution.
That issue can be caused by corrupted cookies.
Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
"Remove Cookies" from sites causing problems:
Worked perfectly! Thanks, cor-el
Thank you very much cor-el. You just save me lots of time looking for the problem myself or deleting FF completely...
Under Tools, Firefox has no entry called "Options"...so this solution doesn't work...
Instead of Tools > Options use:
Press F10 if the menu bar is hidden on Windows and Linux or use "Firefox > Options/Preferences"