If you’re trying to get WordPress MU to work on a machine that isn’t on any domain, i.e. doesn’t have a dot in its name, this article by Will Norris leads you down a possible path.

To tie a bow on it, this is what I did to get things to work in a "WordPress MU subdirectory" configuration: In the wp-config.php file, add a line like this

define(’COOKIE_DOMAIN’, ”);

In a subdomain configuration it probably won’t work.

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Categories: Software