The most recent version of Firefox, version 37, is not working with Parnassus (on Mac or Windows). If you are seeing a “secure connection failed” error page when trying to log into Parnassus, you probably have version 37. Do not attempt to check the version, since checking the version will often initiate the update to the latest version, if one is available.
The only workaround at this time is to use a different Web browser such as Internet Explorer or Chrome on Windows, or Safari or Chrome on Mac.
ITS is actively working to investigate the issue.
ITS Helpdesk
helpdesk@ithaca.edu
104 Job Hall
4-1000
https://www.ithaca.edu/intercom/article.php/20150421111221257