how to solve redirect url problems in Internet Explorer
Found the solution to the problem.Server time wasn't same as client time. (server time:11:30am, client time:5:30pm)"Make sure your server’s time is correct. All browsers set cookies based on the client’s time. IE on the other hand, goes by server time. If the server’s time is in the past, cookies will expire as soon as they are set thus giving the illusion that your cookie never arrived."check the link: http://ellislab.com/forums/viewthread/135722/
Try to replace location with refresh
redirect('administrator/dashboard' , 'refresh');
Try changing
redirect('administrator/dashboard' , 'location');to
redirect('administrator/dashboard' , 'refresh');Just using location can sometimes cause problems