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

Got error 400! something to do with URL! what is campaign URL and visit data

more options

When I tried to do a problem fix for viruses I got this referred data stuff!

When I tried to do a problem fix for viruses I got this referred data stuff!

All Replies (1)

more options

On Windows or on Android?

It sounds as though you clicked a link for something that compensates spammers for promoting a product. I'd forget about that one.

To get links to free products for Windows, please check out our support article: Troubleshoot Firefox issues caused by malware.