Why do I get a Secure Connection Failed message occasionally when trying to popular open sites like Facebook or Yahoo Search?
Occasionally (usually when I most need a quick response) I get this message displayed when trying to open a Facebook.com or Yahoo.com or other similar site: Secure Connection Failed
An error occurred during a connection to www.facebook.com. The server uses key pinning (HPKP) but no trusted certificate chain could be constructed that matches the pinset. Key pinning violations cannot be overridden. Error code: MOZILLA_PKIX_ERROR_KEY_PINNING_FAILURE
The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem.
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I am betting Norton or Mcafee is doing a man in the middle attack and replacing the proper certificate with their own certificate. Can you disable the addons and try again.
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