Two things you do need to go to http://www.entrust.net/developer/index.cfm> Download Root Certificates>Download Certificates.
Download all that are there and install them in Firefox. The ones you already have won't be installed.
To install them in Firefox>Edit>Prefrences>Advanced>Certificates>View Certificates>Import.
Then in terminal type> sudo ln -s /usr/share/ca-certificates/mozilla/* /opt/Citrix/ICAClient/keystor/cacerts> enter
This should solve your problem. For some reason in Linux the Mozilla certificates are stored in the wrong place for citrix.
Last edited by Caver1; 02-17-2015 at 10:36 AM.