Users Cannot Register (Session Expired or cookies not enabled)

Hello, we're running Joomla 2.5, CB 1.9.1, and CBSubs 3.0.

Nearly 90% of the time, when a customer goes to register on our website, they see the infamous "session Expired or cookies not enabled" error.

That said, some computers seem to be more prone to this error than others. My computer, for instance, sees the error only 10% of the time. I happen to be running Centos 7 with Chrome.

Needless to say, I've read numerous threads on similar errors and followed the directions to the letter. No luck so far. Just finished re-installing CB and CBSubs.

Is there any way to fix this? Thanks for any assistance. We're out of ideas here!

Try turning off your

Enable anti-spoofing sessions checks

from your CB -> COnfiguration -> Integration tab

We already tried that and still having the issue.

If you've any form of site caching enabled then try disabling it and retry to see if issue persists. This can also happen if session lifetime is set too short within Joomla global configuration.