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Internet surfing issues

Firefox Privacy and security
SuMo Bot replied
cernesti
cernesti

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 ?
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SuMo Bot
SuMo Bot

Chosen Solution

Can you post what you get when you click Advanced?