Please correct the user name or password.

[sivajik34]

When i login to admin i'm getting following error.

Please correct the user name or password.

1. i have created admin user ,and assigned to role.but still i'm getting same error(using md5 ).
   2.How to re run magento installation? or how to create admin user progratimcally?

[orlangur]

i have created admin user ,and assigned to role.but still i'm getting same error(using md5 ).

You mean directly in database?

How to re run magento installation?

Just remove app/etc/config.php. Also, looking at #892 it seems to me that re-creating of the database could be useful.

[sivajik34]

than you.its working fine