phpBB3 login problem

This often happens when the cookie domain is set incorrectly. Cookie settings are tricky, so the default ones may work or they may not. Many of you have mentioned that this only occurs on IE, which means that it is not handling things properly. If you are having this problem, then try changing the cookie domain so that it has 2 dots ('.example.com' but 'phpbb.co.uk'). After you have made this change, you will need to clear your browser's cookies (at least the ones that have to do with your site) and if you're using IE, close it and open it again.

If you have access to phpMyAdmin, you may wish to TRUNCATE the sessions table.

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