
Originally Posted by
wilt
One of the main reasons that SESSION_FORCE_COOKIE_USE fails is some incorrect server configuration.
Usually a mismatch between your websites domain and it's actual host address.
You say that the code you are working on runs fine without SESSION_FORCE_COOKIE_USE
Do you see a zenid in your urls ?
Can you use a browser tool (such as firefox web developer storage inspector) to examine any cookies that Zen Cart is setting/trying to set.
look at the Cookie Domain and Cookie Path. Do the setting make sense for your site.