Access denied - URL:Blacklist

Hello John.
We're here to help.
Since the issue is on Firefox alone, we'd request you to check for unwanted extensions or add ons in Firefox and remove them.
If that does not help, reset Firefox to default settings and restart your PC.
If you need anything else, do not hesitate to let us know.

Trying to access my energy suppliers website, I get a message that "Threat Secured" mentioning two websites I am not trying to access; because they were infected with URL:Blacklist.

It appears to apply to that one website.

I am using Firefox (version 83.0 (64-bit)), website can be accessed using Chrome or Internet Explorer on other computers with no problem.

If I turn web shield off I can then access the website.

Assistance  would be appertain since I have never had this problem before.


Can supply screen shots as PDF or Jpeg File (not online).

 

Hello John.
We're here to help.
Since the issue is on Firefox alone, we'd request you to check for unwanted extensions or add ons in Firefox and remove them.
If that does not help, reset Firefox to default settings and restart your PC.
If you need anything else, do not hesitate to let us know.