I go to mysite.net/wp-admin.
Once I type in my username and pass word it redirects me to a blank page with address of
mysite.co.uk/wp-login.php?redirect_to=http%3A%2F%2Fmysite.net%2Fwp-admin%2F&reauth=1
I own both domains mysite.co.uk and mysite.net.
in fact mysite.co.uk redirects to mysite.net
Go to your database, and find the table called wp-option, then change the wordpress address and site address to mysite.net.
You can also add the following lines of code to the wp-config.php-file
The above answer didn’t work for me. See: