Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

how do I block a website in Firefox 4

  • 2 replies
  • 27 have this problem
  • 5 views
  • Last reply by Gordanski

more options

I use 1 and 1 Webmail 2.0 for my online e mail which has recently been upgraded and since this, the website I am left with after logging out is suspect as part of the address is 1und 1 instead of 1 and 1 so I want to block this site from opening in Firefox 4. I can do this in my Outlook Express e mail with e mail addresses but can't seem to find a method in Firefox 4.

I use 1 and 1 Webmail 2.0 for my online e mail which has recently been upgraded and since this, the website I am left with after logging out is suspect as part of the address is 1und 1 instead of 1 and 1 so I want to block this site from opening in Firefox 4. I can do this in my Outlook Express e mail with e mail addresses but can't seem to find a method in Firefox 4.

All Replies (2)

more options

You may have ended up on the German site (https://email.1und1.de) of Webmailer 2


Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove the Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"
more options

Thanks for your helpful advice especially about the German site which eases my concern a little.