Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
Solved Ezilondoloziweyo

Since yesterday, I have been unable to use Firefox to sign into my online banking and keep getting a sign in error message

paulthes

I have been using Mozilla Firefox and Thunderbird for several years without any problems. Since yesterday, on trying to log into my online banking accounts, I keep getting a sign in error message. I have checked with my bank and the error does not lie with their website or my user name and password. I am able sign in successfully using Internet Explorer. I have tried uninstalling Firefox and then downloading the latest version from your website but this has made no difference

I have been using Mozilla Firefox and Thunderbird for several years without any problems. Since yesterday, on trying to log into my online banking accounts, I keep getting a sign in error message. I have checked with my bank and the error does not lie with their website or my user name and password. I am able sign in successfully using Internet Explorer. I have tried uninstalling Firefox and then downloading the latest version from your website but this has made no difference

All Replies (2)

Isisombululo esiKhethiweyo

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

Worked a treat - Thank you very much.

Paul