hello MozProbgoogle1, first please make sure that the date & time is set correctly on your system. if this doesn't solve the issue (or it is already set properly), a possible solution depends on different factors:

• what is the error code shown under technical details on the error page?

in case the error code equals sec_error_unknown_issuer, please attempt to add an exception on the bottom of the error page & inspect the certificate (see the screenshot attached for instructions):

• which issuer information does the certificate contain?

thank you!

"This Connection is Untrusted" error message appears - What to do

Hi Phillip it did have the "sec_error_unknown_issuer" error. I added the exception -- It was for Yahoo. Yahoo only opens up in basic mode. No pictures. Will try to add Mozilla next to see if some extensions are preventing viewing. Any other suggestions?

please don't add any exceptions for real, but only inspect the certificate and then report back with the issuer information (as described on the screenshot above).

Sorry about that -- I did the same for google -- but took a screen shot of the issurer:

ok, this is caused by your security software intercepting and scanning secure network traffic.

• you can either import the eset root certificate into firefox:
  For SSL communication to work properly in your browsers/email clients, it is essential that the root certificate for ESET, spol. s r.o. be added to the list of known root certificates (publishers). Therefore, the Add the root certificate to known browsers option should be enabled. Select this option to automatically add the ESET root certificate to the known browsers (e.g. Opera, Firefox). For browsers using the system certification store, the certificate is added automatically (e.g. Internet Explorer). To apply the certificate to unsupported browsers, click View Certificate > Details > Copy to File... and then manually import it into the browser.
  _{source: page 64 from http://download.eset.com/manuals/eset_ess_5_userguide_enu.pdf}

• or you can generally disable the scanning of ssl traffic within eset: http://kb.eset.com/esetkb/index?page=content&id=SOLN3126

in case you cannot solve it that way you could also contact eset's support...