LHC@home has been consolidated and uses SSL for communication as mentioned in this thread last year.

Some BOINC clients are still connecting to the old lhcathomeclassic.cern.ch/sixtrack address, that will be phased out soon.

If this is the case for you, please re-attach the project to the current LHC@home URL presented in the BOINC manager. (http://lhcathome.cern.ch will redirect your BOINC client to https://lhcathome.cern.ch/lhcathome )

For those who are still running an old BOINC 6 client, please upgrade to BOINC 7.2 or later. (The current BOINC client releases are 7.6.33 or 7.8.)

Many thanks for your contributions to LHC@home!

More...