- What are your current cookie settings?
- Make sure that your browser accepts cookies from your domain (IE 6.0: Privacy settings)
- Check your cookie settings in Admin Panel --> General Admin --> Configuration:
The recommendation is to put the domain there (remembering that two dots are essential, e.g. domain.com will not work properly but .domain.com or domain.com. may work), with path set to / this will (or should!) work in the vast majority of cases. If it doesn't the next recommendation is to leave the cookie domain blank and set path to / .
for cookie domain will not work. Do not enable cookie secure unless you use https. Don't forget to delete all relevant cookies when trying out these different options.