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Size of a request header field exceeds server limit.

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  • 0 have this problem
  • 279 views
  • Last reply by cor-el
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For several weeks now I have been a Bad Request error when trying to sign into my bank account:

Bad Request

Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit.

Things work fine when I use Google Chrome, but I do not view that as a long-term fix. Can you help?

For several weeks now I have been a Bad Request error when trying to sign into my bank account: Bad Request Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit. Things work fine when I use Google Chrome, but I do not view that as a long-term fix. Can you help?

All Replies (1)

This issue is usually caused by corrupted cookies.

Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Settings).

"Remove the Cookies" for websites that cause problems:

  • Settings -> Privacy & Security
    Cookies and Site Data: "Manage Data"

"Clear the Cache":

  • Settings -> Privacy & Security
    Cookies and Site Data -> Clear Data -> [X] Cached Web Content -> Clear