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.

Avatar for Username

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 thread was archived. Please ask a new question if you need help.

Error message browser sent invalid command

  • 1 பதிலளி
  • 1 இந்த பிரச்சனை உள்ளது
  • 31 views
  • Last reply by cor-el

tvtomo
tvtomo
more options

After clicking on a link,, the following error message appears. It happens with various links and follows an automatic upgrade to FF 18.0.

400 Bad request Your browser sent an invalid request.

After clicking on a link,, the following error message appears. It happens with various links and follows an automatic upgrade to FF 18.0. 400 Bad request Your browser sent an invalid request.

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

This error can be caused by corrupted cookies.

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

"Clear the Cache":

  • Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

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