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

Internet surfing issues

  • 1 reply
  • 1 has this problem
  • 10 views
  • Last reply by jonzn4SUSE

more options

I switched to a new Mac, I downloaded Kaspersky Internet Security and then I downloaded Firefox but when I want to get to any site I get this : www.youtube.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.". What shall I do ?

I switched to a new Mac, I downloaded Kaspersky Internet Security and then I downloaded Firefox but when I want to get to any site I get this : www.youtube.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.". What shall I do ?
Attached screenshots

Chosen solution

Can you post what you get when you click Advanced?

Read this answer in context 👍 0

All Replies (1)

more options

Chosen Solution

Can you post what you get when you click Advanced?