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Size of a request header field exceeds server limit.

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Gus Gassmann
Gus Gassmann
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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?

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cor-el
cor-el
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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