Greetings traceygl This issue has been on the forum. Please read here. There are all ways to solve your problem PS. When the problem occurred, it is often solved by manually refreshing the browser (download the package from the official Mozilla website)

I hope this will help you. Thank you for contacting support forum!

Please check the version of Firefox you are using. You should be using a Fx44 now (Fx 45 next week).

Firefox 44 relaxed its security requirements to allow for use of security software that itself uses insecure certificates. As it stands bulguard is causing the issue because it effectively tries to impersonate google. Disabling bulguard will solve your problem.

Also any others with similar problems check that your computer clock is set to the correct time, note other security software also causes this issue,it is not restricted to bulguard.

Some common related issues an solutions see

• What do the security warning codes mean?

P.S. Windows often has its own security software. Windows 10 will have a built in Firewall and Anti Virus software. Firefox itself by default offers basic anti phishing and malware protection

• How does built-in Phishing and Malware Protection work?

Note if you turn off bulguards interference with Firefox you will still be able to use bulguard's AntiVirus features as an alternative to the free Windows AV that you already have.