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

Error message: 400 Bad Request Request Header Or Cookie Too Large nginx/1.18.0 (Ubuntu)

  • 3 replies
  • 2 have this problem
  • 11 views
  • Last reply by cor-el

more options

When I click a link on a website, a new Firefox tab opens with this message: 400 Bad Request Request Header Or Cookie Too Large nginx/1.18.0 (Ubuntu). This is new behavior; it was working fine until yesterday. Can you tell me how to fix it?

When I click a link on a website, a new Firefox tab opens with this message: 400 Bad Request Request Header Or Cookie Too Large nginx/1.18.0 (Ubuntu). This is new behavior; it was working fine until yesterday. Can you tell me how to fix it?

All Replies (3)

more options

Steps to replicate the issue and screenshots please. Try downloading Firefox from Mozilla, run it from the folder and see if you have the same issue. https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

more options

@jonzn4SUSE,

Thanks for your reply.

I cleared the cache. Doing this logged me out of other websites I was using, but it also cleared up the issue.

Thanks again.

more options

Note that this is usually a problem with the cookies and clearing the cookies for this website via the padlock should fix this.