We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

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

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

Firefox unresponsive on financial data update on Barclaycard and TescoMobile.

  • 1 freagra
  • 1 leis an bhfadhb seo
  • 7 views
  • Freagra is déanaí ó FredMcD

DionysusMike
DionysusMike
more options

When updating data on financial or commercial websites, Firefox hangs. In the case of Tesco Mobile, when creating a new account and buying a SIM, after about 10 minutes of hanging, the screen changed with this message: "400 Bad Request. nginx/1.11.3". I input exactly the same Tesco Mobile data on Chrome and it updated with only a few seconds delay.

I use Windows 10 1803, McAfee Live Safe and Trusteer Rapport (on both Firefox 60.0.1 64 bit and Chrome 66.0.3359.181 64-bit).

This problem did not happen before on Windows 10 1709.

Please explain why this problem is occurring and suggest a solution.

Mike Brown

When updating data on financial or commercial websites, Firefox hangs. In the case of Tesco Mobile, when creating a new account and buying a SIM, after about 10 minutes of hanging, the screen changed with this message: "400 Bad Request. nginx/1.11.3". I input exactly the same Tesco Mobile data on Chrome and it updated with only a few seconds delay. I use Windows 10 1803, McAfee Live Safe and Trusteer Rapport (on both Firefox 60.0.1 64 bit and Chrome 66.0.3359.181 64-bit). This problem did not happen before on Windows 10 1709. Please explain why this problem is occurring and suggest a solution. Mike Brown

All Replies (1)

FredMcD
FredMcD
more options

Basically, the 400 error means page not found.

Many site issues can be caused by corrupt cookies or cache.

  • Clear the Cache and
  • Remove Cookies

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

If there is still a problem, Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Did this help?

While you are in safe mode;

Try disabling graphics hardware acceleration in Firefox. Since this feature was added to Firefox it has gradually improved but there are still a few glitches.

How to disable Hardware Acceleration {web link}