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citibank site won't work

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The citibank site has not worked for a week or two. I get the following error:

Bad Request

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

The citibank site has not worked for a week or two. I get the following error: Bad Request Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit

All Replies (2)

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Try to click the lock icon in the address bar and then clear cookies an website data.

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Are you having issues just getting to the site or after you login? see screenshot Have you tried with Firefox in Safe Mode? https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_how-to-start-firefox-in-4troubleshoot-modesf5safe-modesf

You can also try the option Forget About This Site, but make you have the login info. https://support.mozilla.org/en-US/kb/remove-websites-address-bar-suggestions