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Can't login to American Express on Firefox

hollyh
hollyh
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This started a couple of weeks ago. I've cleared my cache, data etc and it still gives me the message " We are unable to access your Account. For further assistance, please call the number on the back of your Card" I have called American Express about it, but it is only a problem with Firefox. I can login on Chrome - which I do not want to use. Help??

This started a couple of weeks ago. I've cleared my cache, data etc and it still gives me the message " We are unable to access your Account. For further assistance, please call the number on the back of your Card" I have called American Express about it, but it is only a problem with Firefox. I can login on Chrome - which I do not want to use. Help??
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jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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Here's my first guess:

Firefox recently rolled out "Total Cookie Protection" to more users. This limits how sites can use "third party" or "cross-site" cookies, meaning cookies from different websites than the one you see in the address bar. Some sites pass you back and forth between different servers during login because they have their services spread out over a number of different servers -- not sure about AmEx. In those cases, you might be able to submit a form successfully on one page and then the next page says you are not logged in. Frustrating!

You can make exceptions to this feature when needed (for each server that you visit as part of the process of using this company's services). More info in the following articles:

Any difference?