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Firefox recently started opening unwanted websites specific: Zalando.nl). How can I block this?

  • 2 replies
  • 2 have this problem
  • 2 views
  • Last reply by cor-el

I do use a firewall, a virus scanner, ccleaner, spybot, keep them all as up to date as possible, running them on a regular and frequent basis, but I am still plagued by guerilla marketing techniques form Zalando.nl, a German-based seller of shoes and fashion, recently conquering the Dutch market. I never bought an item and manually removed any cookie I could find. Even a root kit scan by Avast did not solve the problem.

I do use a firewall, a virus scanner, ccleaner, spybot, keep them all as up to date as possible, running them on a regular and frequent basis, but I am still plagued by guerilla marketing techniques form Zalando.nl, a German-based seller of shoes and fashion, recently conquering the Dutch market. I never bought an item and manually removed any cookie I could find. Even a root kit scan by Avast did not solve the problem.

Chosen solution

All Replies (2)

Chosen Solution

You can open the about:config page and search for prefs that are referring to Zalando and reset those prefs via the right-click context menu to the default value.

If you do not keep changes after a restart then see:


Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files.


Do a malware check with some malware scanning programs on the Windows computer.
Please scan with all programs because each program detects different malware.

Make sure that you update each program to get the latest version of their databases before doing a scan.

You can also do a check for a rootkit infection with TDSSKiller.

See also: