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Unable to Sign in to Costco.com

  • 2 replies
  • 1 has this problem
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  • Last reply by compupix

compupix
compupix
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I am unable to sign into Costco.com using Firefox. I get an error message: 

    "Bad Request - Header Field Too Long
    HTTP Error 400. A request header field is too long."

Turning off all extensions didn't help. Opening a private browsing window DID work. Using Chrome DID work.

Thanks!

I am unable to sign into Costco.com using Firefox. I get an error message: "Bad Request - Header Field Too Long HTTP Error 400. A request header field is too long." Turning off all extensions didn't help. Opening a private browsing window DID work. Using Chrome DID work. Thanks!

Chosen solution

Try "Clear cookies and site data" from the padlock icon in the address bar.

Read this answer in context 👍 1

All Replies (2)

zeroknight
zeroknight
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Chosen Solution

Try "Clear cookies and site data" from the padlock icon in the address bar.

compupix
compupix Question owner
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That worked. What an easy way to clear cookies and site data for just this site! Thanks! :)