This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This week firefox gives me this msg: Sorry, Bad Request.... when I click on something

  • 1 reply
  • 4 have this problem
  • 1 view
  • Last reply by cor-el

more options

When I click on an item to read on the yahoo! homepage, I am frequently seeing this msg: Sorry, Bad Request. Your browser sent a request that this server could not understand.

Size of a request header field exceeds server limit. There is more, but I didn't capture it. I will have to exit firefox and then use internet explorer to read the item. This began last week.

When I click on an item to read on the yahoo! homepage, I am frequently seeing this msg: Sorry, Bad Request. Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit. There is more, but I didn't capture it. I will have to exit firefox and then use internet explorer to read the item. This began last week.

All Replies (1)

more options

This issue can be caused by corrupted cookies.

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

"Clear the Cache":

  • Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"