Just downloaded latest version of Firefox, but each site brings no reliable error using Firefox, but same sites are ok with IE and Chrome

I have Windows 7 family on a laptop. I just downloaded the latest version of Firefox (v25) and Google as default search engine. Any site I enter in Google, I get the message 'Not reliable' site. I typed in BBC, Firefox etc. The message is:

This connection is Untrusted

You asked Firefox to connect safely on www.google.com, but we cannot confirm that your connection is secure.

My virus checker is Norton.

I read that the support forum and my date and time are correct. I have IE and Chrome with Google like search engine by default and is not the message when you access the BBC, Firefox etc.

This is the first time that Firefox has been downloaded to the laptop.

Please someone has an idea what is causing the problem.

I had installed BrowserSafe. As soon as I uninstalled Firefox worked properly.

Thank you very much for the advice.

Tags: Firefox

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