Secure connection has no error - for almost all sites!

Mozilla Firefox began vomiting following for almost all Internet sites error message I usually access!

The error:

The secure connection failed

The connection to the server was reset while the page is loading.

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the web site owners to inform them of this problem.

I use a laptop computer Lenovo z580 with Windows 7 Home Premium with Firefox installed 41.0.2.
I checked the proxy settings, and they are the same in Firefox, like in other browsers (IE and Chrome).
I checked the settings of the system time, and there is no problem there.

I'm unable to download images for a reason, so I downloaded the images (of the error messages for different Web sites to http://s912.photobucket.com/user/sushd/library/Firefox

Any help is appreciated.

TIA

Make a check of malware with several malware scanning of programs on the Windows computer.

Please scan with all programs, because each program detects a different malicious program.
All of these programs have free versions.

Make sure that you update each program to get the latest version of their databases before scanning.

Alternatively, you can write a check for an infection rootkit TDSSKiller.

See also:

Tags: Firefox

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