My site was recently upgraded automatically to 3.8.2 and I'm now getting "ERROR: Cookies are blocked or not supported by your browser. You must enable cookies to use WordPress." when I try to log into the admin page. I've looked at several other forums and have done the following:
1. Deactivated all plugins (via phpMyAdmin)
2. Reset theme to default theme (via phpMyAdmin)
3. Cleared cookies and tried different browsers
But I still am getting the error. I also see the following warnings on the login page:
Warning: Cannot modify header information - headers already sent by (output started at /home/<sitename>/wp-config.php:2) in /home/<sitename>/wp-login.php on line 415
Warning: Cannot modify header information - headers already sent by (output started at /home/<sitename>/wp-config.php:2) in /home/<sitename>/wp-login.php on line 427
Any ideas?