The test page is here:

https://www.ssllabs.com/ssltest/viewMyClient.html

I'mtrying to figure out if there's a problem with my FF2 configs - or if getting "www.ssllabs.com has sent an incorrect or unexpected message.  Error code -12243" is normal/expected for FF2.  The page says (after dismissing the error message) "Failed, probably due to firewall restrictions "  and is showing that no TLS or SSL protocals are working (some say NO, some say Firewall).  I'm not running any firewall.

Opera 12.02 is saying TLS 1.3 (no), 1.2 (yes), 1.1 (yes), 1.0 (yes), SSL3 (yes), SSl2 (no).
 

On venerdì 18 agosto 2017 at 2:15 PM, Nomen said:

The page says (after dismissing the error message) "Failed, probably due to firewall restrictions "

Your likely "counter move...": disable SSL3 in the security protocols, delete data and reload the page.
 

In FF2 I get "Connection was interrupted" unless I enable SSL2. So with SSL2 enabled:

With JS on, messages are reproduced here...so expected.
With JS off, only typical JS missing warnings.

All reloads yield "Connection was interrupted" until FF2 is restarted.

Disabling SSL3 has no affect.