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!

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

Everytime I request anything I get this: "Requested URL not found: 400"

  • 2
  • 76
  • 2 views
  • Nzaghachi ikpeazụ nke Kel1

more options

I have Total PC health and it asked to update a URL driver. Since then I get the same error when ever I try to do something on firefox. I restore total pc health, but nothing is right. I've uninstalled firefox and reinstalled firefox, still nothing. Same error each time A error occurred: Requested URL not found: 400

I have Total PC health and it asked to update a URL driver. Since then I get the same error when ever I try to do something on firefox. I restore total pc health, but nothing is right. I've uninstalled firefox and reinstalled firefox, still nothing. Same error each time A error occurred: Requested URL not found: 400

All Replies (2)

more options

If that is a firewall then try to remove all Firefox rules in that firewall including rules for the plugin-container and updater program.

more options

I found my problem was linked to AVG's link scanner. If I disable "Enable surf-Shield it fixes the "Requested URL not found: 400" but a warning from AVG will follow.